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1 /* Copyright (c) 2006-2008 Jonas Fonseca <fonseca@diku.dk>
2 *
3 * This program is free software; you can redistribute it and/or
4 * modify it under the terms of the GNU General Public License as
5 * published by the Free Software Foundation; either version 2 of
6 * the License, or (at your option) any later version.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 */
14 #ifdef HAVE_CONFIG_H
15 #include "config.h"
16 #endif
18 #ifndef TIG_VERSION
19 #define TIG_VERSION "unknown-version"
20 #endif
22 #ifndef DEBUG
23 #define NDEBUG
24 #endif
26 #include <assert.h>
27 #include <errno.h>
28 #include <ctype.h>
29 #include <signal.h>
30 #include <stdarg.h>
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <string.h>
34 #include <sys/types.h>
35 #include <sys/wait.h>
36 #include <sys/stat.h>
37 #include <unistd.h>
38 #include <time.h>
39 #include <fcntl.h>
41 #include <regex.h>
43 #include <locale.h>
44 #include <langinfo.h>
45 #include <iconv.h>
47 /* ncurses(3): Must be defined to have extended wide-character functions. */
48 #define _XOPEN_SOURCE_EXTENDED
50 #ifdef HAVE_NCURSESW_NCURSES_H
51 #include <ncursesw/ncurses.h>
52 #else
53 #ifdef HAVE_NCURSES_NCURSES_H
54 #include <ncurses/ncurses.h>
55 #else
56 #include <ncurses.h>
57 #endif
58 #endif
60 #if __GNUC__ >= 3
61 #define __NORETURN __attribute__((__noreturn__))
62 #else
63 #define __NORETURN
64 #endif
66 static void __NORETURN die(const char *err, ...);
67 static void warn(const char *msg, ...);
68 static void report(const char *msg, ...);
69 static void set_nonblocking_input(bool loading);
70 static size_t utf8_length(const char *string, int *width, size_t max_width, int *trimmed, bool reserve);
71 static bool prompt_yesno(const char *prompt);
72 static int load_refs(void);
74 #define ABS(x) ((x) >= 0 ? (x) : -(x))
75 #define MIN(x, y) ((x) < (y) ? (x) : (y))
77 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
78 #define STRING_SIZE(x) (sizeof(x) - 1)
80 #define SIZEOF_STR 1024 /* Default string size. */
81 #define SIZEOF_REF 256 /* Size of symbolic or SHA1 ID. */
82 #define SIZEOF_REV 41 /* Holds a SHA-1 and an ending NUL. */
83 #define SIZEOF_ARG 32 /* Default argument array size. */
85 /* Revision graph */
87 #define REVGRAPH_INIT 'I'
88 #define REVGRAPH_MERGE 'M'
89 #define REVGRAPH_BRANCH '+'
90 #define REVGRAPH_COMMIT '*'
91 #define REVGRAPH_BOUND '^'
93 #define SIZEOF_REVGRAPH 19 /* Size of revision ancestry graphics. */
95 /* This color name can be used to refer to the default term colors. */
96 #define COLOR_DEFAULT (-1)
98 #define ICONV_NONE ((iconv_t) -1)
99 #ifndef ICONV_CONST
100 #define ICONV_CONST /* nothing */
101 #endif
103 /* The format and size of the date column in the main view. */
104 #define DATE_FORMAT "%Y-%m-%d %H:%M"
105 #define DATE_COLS STRING_SIZE("2006-04-29 14:21 ")
107 #define AUTHOR_COLS 20
108 #define ID_COLS 8
110 /* The default interval between line numbers. */
111 #define NUMBER_INTERVAL 5
113 #define TAB_SIZE 8
115 #define SCALE_SPLIT_VIEW(height) ((height) * 2 / 3)
117 #define NULL_ID "0000000000000000000000000000000000000000"
119 #ifndef GIT_CONFIG
120 #define GIT_CONFIG "config"
121 #endif
123 /* Some ascii-shorthands fitted into the ncurses namespace. */
124 #define KEY_TAB '\t'
125 #define KEY_RETURN '\r'
126 #define KEY_ESC 27
129 struct ref {
130 char *name; /* Ref name; tag or head names are shortened. */
131 char id[SIZEOF_REV]; /* Commit SHA1 ID */
132 unsigned int head:1; /* Is it the current HEAD? */
133 unsigned int tag:1; /* Is it a tag? */
134 unsigned int ltag:1; /* If so, is the tag local? */
135 unsigned int remote:1; /* Is it a remote ref? */
136 unsigned int tracked:1; /* Is it the remote for the current HEAD? */
137 unsigned int next:1; /* For ref lists: are there more refs? */
138 };
140 static struct ref **get_refs(const char *id);
142 enum format_flags {
143 FORMAT_ALL, /* Perform replacement in all arguments. */
144 FORMAT_DASH, /* Perform replacement up until "--". */
145 FORMAT_NONE /* No replacement should be performed. */
146 };
148 static bool format_argv(const char *dst[], const char *src[], enum format_flags flags);
150 struct int_map {
151 const char *name;
152 int namelen;
153 int value;
154 };
156 static int
157 set_from_int_map(struct int_map *map, size_t map_size,
158 int *value, const char *name, int namelen)
159 {
161 int i;
163 for (i = 0; i < map_size; i++)
164 if (namelen == map[i].namelen &&
165 !strncasecmp(name, map[i].name, namelen)) {
166 *value = map[i].value;
167 return OK;
168 }
170 return ERR;
171 }
174 /*
175 * String helpers
176 */
178 static inline void
179 string_ncopy_do(char *dst, size_t dstlen, const char *src, size_t srclen)
180 {
181 if (srclen > dstlen - 1)
182 srclen = dstlen - 1;
184 strncpy(dst, src, srclen);
185 dst[srclen] = 0;
186 }
188 /* Shorthands for safely copying into a fixed buffer. */
190 #define string_copy(dst, src) \
191 string_ncopy_do(dst, sizeof(dst), src, sizeof(src))
193 #define string_ncopy(dst, src, srclen) \
194 string_ncopy_do(dst, sizeof(dst), src, srclen)
196 #define string_copy_rev(dst, src) \
197 string_ncopy_do(dst, SIZEOF_REV, src, SIZEOF_REV - 1)
199 #define string_add(dst, from, src) \
200 string_ncopy_do(dst + (from), sizeof(dst) - (from), src, sizeof(src))
202 static char *
203 chomp_string(char *name)
204 {
205 int namelen;
207 while (isspace(*name))
208 name++;
210 namelen = strlen(name) - 1;
211 while (namelen > 0 && isspace(name[namelen]))
212 name[namelen--] = 0;
214 return name;
215 }
217 static bool
218 string_nformat(char *buf, size_t bufsize, size_t *bufpos, const char *fmt, ...)
219 {
220 va_list args;
221 size_t pos = bufpos ? *bufpos : 0;
223 va_start(args, fmt);
224 pos += vsnprintf(buf + pos, bufsize - pos, fmt, args);
225 va_end(args);
227 if (bufpos)
228 *bufpos = pos;
230 return pos >= bufsize ? FALSE : TRUE;
231 }
233 #define string_format(buf, fmt, args...) \
234 string_nformat(buf, sizeof(buf), NULL, fmt, args)
236 #define string_format_from(buf, from, fmt, args...) \
237 string_nformat(buf, sizeof(buf), from, fmt, args)
239 static int
240 string_enum_compare(const char *str1, const char *str2, int len)
241 {
242 size_t i;
244 #define string_enum_sep(x) ((x) == '-' || (x) == '_' || (x) == '.')
246 /* Diff-Header == DIFF_HEADER */
247 for (i = 0; i < len; i++) {
248 if (toupper(str1[i]) == toupper(str2[i]))
249 continue;
251 if (string_enum_sep(str1[i]) &&
252 string_enum_sep(str2[i]))
253 continue;
255 return str1[i] - str2[i];
256 }
258 return 0;
259 }
261 #define prefixcmp(str1, str2) \
262 strncmp(str1, str2, STRING_SIZE(str2))
264 static inline int
265 suffixcmp(const char *str, int slen, const char *suffix)
266 {
267 size_t len = slen >= 0 ? slen : strlen(str);
268 size_t suffixlen = strlen(suffix);
270 return suffixlen < len ? strcmp(str + len - suffixlen, suffix) : -1;
271 }
274 static bool
275 argv_from_string(const char *argv[SIZEOF_ARG], int *argc, char *cmd)
276 {
277 int valuelen;
279 while (*cmd && *argc < SIZEOF_ARG && (valuelen = strcspn(cmd, " \t"))) {
280 bool advance = cmd[valuelen] != 0;
282 cmd[valuelen] = 0;
283 argv[(*argc)++] = chomp_string(cmd);
284 cmd += valuelen + advance;
285 }
287 if (*argc < SIZEOF_ARG)
288 argv[*argc] = NULL;
289 return *argc < SIZEOF_ARG;
290 }
292 static void
293 argv_from_env(const char **argv, const char *name)
294 {
295 char *env = argv ? getenv(name) : NULL;
296 int argc = 0;
298 if (env && *env)
299 env = strdup(env);
300 if (env && !argv_from_string(argv, &argc, env))
301 die("Too many arguments in the `%s` environment variable", name);
302 }
305 /*
306 * Executing external commands.
307 */
309 enum io_type {
310 IO_FD, /* File descriptor based IO. */
311 IO_BG, /* Execute command in the background. */
312 IO_FG, /* Execute command with same std{in,out,err}. */
313 IO_RD, /* Read only fork+exec IO. */
314 IO_WR, /* Write only fork+exec IO. */
315 };
317 struct io {
318 enum io_type type; /* The requested type of pipe. */
319 const char *dir; /* Directory from which to execute. */
320 pid_t pid; /* Pipe for reading or writing. */
321 int pipe; /* Pipe end for reading or writing. */
322 int error; /* Error status. */
323 const char *argv[SIZEOF_ARG]; /* Shell command arguments. */
324 char *buf; /* Read buffer. */
325 size_t bufalloc; /* Allocated buffer size. */
326 size_t bufsize; /* Buffer content size. */
327 char *bufpos; /* Current buffer position. */
328 unsigned int eof:1; /* Has end of file been reached. */
329 };
331 static void
332 reset_io(struct io *io)
333 {
334 io->pipe = -1;
335 io->pid = 0;
336 io->buf = io->bufpos = NULL;
337 io->bufalloc = io->bufsize = 0;
338 io->error = 0;
339 io->eof = 0;
340 }
342 static void
343 init_io(struct io *io, const char *dir, enum io_type type)
344 {
345 reset_io(io);
346 io->type = type;
347 io->dir = dir;
348 }
350 static bool
351 init_io_rd(struct io *io, const char *argv[], const char *dir,
352 enum format_flags flags)
353 {
354 init_io(io, dir, IO_RD);
355 return format_argv(io->argv, argv, flags);
356 }
358 static bool
359 io_open(struct io *io, const char *name)
360 {
361 init_io(io, NULL, IO_FD);
362 io->pipe = *name ? open(name, O_RDONLY) : STDIN_FILENO;
363 return io->pipe != -1;
364 }
366 static bool
367 kill_io(struct io *io)
368 {
369 return kill(io->pid, SIGKILL) != -1;
370 }
372 static bool
373 done_io(struct io *io)
374 {
375 pid_t pid = io->pid;
377 if (io->pipe != -1)
378 close(io->pipe);
379 free(io->buf);
380 reset_io(io);
382 while (pid > 0) {
383 int status;
384 pid_t waiting = waitpid(pid, &status, 0);
386 if (waiting < 0) {
387 if (errno == EINTR)
388 continue;
389 report("waitpid failed (%s)", strerror(errno));
390 return FALSE;
391 }
393 return waiting == pid &&
394 !WIFSIGNALED(status) &&
395 WIFEXITED(status) &&
396 !WEXITSTATUS(status);
397 }
399 return TRUE;
400 }
402 static bool
403 start_io(struct io *io)
404 {
405 int pipefds[2] = { -1, -1 };
407 if (io->type == IO_FD)
408 return TRUE;
410 if ((io->type == IO_RD || io->type == IO_WR) &&
411 pipe(pipefds) < 0)
412 return FALSE;
414 if ((io->pid = fork())) {
415 if (pipefds[!(io->type == IO_WR)] != -1)
416 close(pipefds[!(io->type == IO_WR)]);
417 if (io->pid != -1) {
418 io->pipe = pipefds[!!(io->type == IO_WR)];
419 return TRUE;
420 }
422 } else {
423 if (io->type != IO_FG) {
424 int devnull = open("/dev/null", O_RDWR);
425 int readfd = io->type == IO_WR ? pipefds[0] : devnull;
426 int writefd = io->type == IO_RD ? pipefds[1] : devnull;
428 dup2(readfd, STDIN_FILENO);
429 dup2(writefd, STDOUT_FILENO);
430 dup2(devnull, STDERR_FILENO);
432 close(devnull);
433 if (pipefds[0] != -1)
434 close(pipefds[0]);
435 if (pipefds[1] != -1)
436 close(pipefds[1]);
437 }
439 if (io->dir && *io->dir && chdir(io->dir) == -1)
440 die("Failed to change directory: %s", strerror(errno));
442 execvp(io->argv[0], (char *const*) io->argv);
443 die("Failed to execute program: %s", strerror(errno));
444 }
446 if (pipefds[!!(io->type == IO_WR)] != -1)
447 close(pipefds[!!(io->type == IO_WR)]);
448 return FALSE;
449 }
451 static bool
452 run_io(struct io *io, const char **argv, const char *dir, enum io_type type)
453 {
454 init_io(io, dir, type);
455 if (!format_argv(io->argv, argv, FORMAT_NONE))
456 return FALSE;
457 return start_io(io);
458 }
460 static int
461 run_io_do(struct io *io)
462 {
463 return start_io(io) && done_io(io);
464 }
466 static int
467 run_io_bg(const char **argv)
468 {
469 struct io io = {};
471 init_io(&io, NULL, IO_BG);
472 if (!format_argv(io.argv, argv, FORMAT_NONE))
473 return FALSE;
474 return run_io_do(&io);
475 }
477 static bool
478 run_io_fg(const char **argv, const char *dir)
479 {
480 struct io io = {};
482 init_io(&io, dir, IO_FG);
483 if (!format_argv(io.argv, argv, FORMAT_NONE))
484 return FALSE;
485 return run_io_do(&io);
486 }
488 static bool
489 run_io_rd(struct io *io, const char **argv, enum format_flags flags)
490 {
491 return init_io_rd(io, argv, NULL, flags) && start_io(io);
492 }
494 static bool
495 io_eof(struct io *io)
496 {
497 return io->eof;
498 }
500 static int
501 io_error(struct io *io)
502 {
503 return io->error;
504 }
506 static bool
507 io_strerror(struct io *io)
508 {
509 return strerror(io->error);
510 }
512 static ssize_t
513 io_read(struct io *io, void *buf, size_t bufsize)
514 {
515 do {
516 ssize_t readsize = read(io->pipe, buf, bufsize);
518 if (readsize < 0 && (errno == EAGAIN || errno == EINTR))
519 continue;
520 else if (readsize == -1)
521 io->error = errno;
522 else if (readsize == 0)
523 io->eof = 1;
524 return readsize;
525 } while (1);
526 }
528 static char *
529 io_get(struct io *io, int c, bool can_read)
530 {
531 char *eol;
532 ssize_t readsize;
534 if (!io->buf) {
535 io->buf = io->bufpos = malloc(BUFSIZ);
536 if (!io->buf)
537 return NULL;
538 io->bufalloc = BUFSIZ;
539 io->bufsize = 0;
540 }
542 while (TRUE) {
543 if (io->bufsize > 0) {
544 eol = memchr(io->bufpos, c, io->bufsize);
545 if (eol) {
546 char *line = io->bufpos;
548 *eol = 0;
549 io->bufpos = eol + 1;
550 io->bufsize -= io->bufpos - line;
551 return line;
552 }
553 }
555 if (io_eof(io)) {
556 if (io->bufsize) {
557 io->bufpos[io->bufsize] = 0;
558 io->bufsize = 0;
559 return io->bufpos;
560 }
561 return NULL;
562 }
564 if (!can_read)
565 return NULL;
567 if (io->bufsize > 0 && io->bufpos > io->buf)
568 memmove(io->buf, io->bufpos, io->bufsize);
570 io->bufpos = io->buf;
571 readsize = io_read(io, io->buf + io->bufsize, io->bufalloc - io->bufsize);
572 if (io_error(io))
573 return NULL;
574 io->bufsize += readsize;
575 }
576 }
578 static bool
579 io_write(struct io *io, const void *buf, size_t bufsize)
580 {
581 size_t written = 0;
583 while (!io_error(io) && written < bufsize) {
584 ssize_t size;
586 size = write(io->pipe, buf + written, bufsize - written);
587 if (size < 0 && (errno == EAGAIN || errno == EINTR))
588 continue;
589 else if (size == -1)
590 io->error = errno;
591 else
592 written += size;
593 }
595 return written == bufsize;
596 }
598 static bool
599 run_io_buf(const char **argv, char buf[], size_t bufsize)
600 {
601 struct io io = {};
602 bool error;
604 if (!run_io_rd(&io, argv, FORMAT_NONE))
605 return FALSE;
607 io.buf = io.bufpos = buf;
608 io.bufalloc = bufsize;
609 error = !io_get(&io, '\n', TRUE) && io_error(&io);
610 io.buf = NULL;
612 return done_io(&io) || error;
613 }
615 static int read_properties(struct io *io, const char *separators, int (*read)(char *, size_t, char *, size_t));
617 /*
618 * User requests
619 */
621 #define REQ_INFO \
622 /* XXX: Keep the view request first and in sync with views[]. */ \
623 REQ_GROUP("View switching") \
624 REQ_(VIEW_MAIN, "Show main view"), \
625 REQ_(VIEW_DIFF, "Show diff view"), \
626 REQ_(VIEW_LOG, "Show log view"), \
627 REQ_(VIEW_TREE, "Show tree view"), \
628 REQ_(VIEW_BLOB, "Show blob view"), \
629 REQ_(VIEW_BLAME, "Show blame view"), \
630 REQ_(VIEW_HELP, "Show help page"), \
631 REQ_(VIEW_PAGER, "Show pager view"), \
632 REQ_(VIEW_STATUS, "Show status view"), \
633 REQ_(VIEW_STAGE, "Show stage view"), \
634 \
635 REQ_GROUP("View manipulation") \
636 REQ_(ENTER, "Enter current line and scroll"), \
637 REQ_(NEXT, "Move to next"), \
638 REQ_(PREVIOUS, "Move to previous"), \
639 REQ_(VIEW_NEXT, "Move focus to next view"), \
640 REQ_(REFRESH, "Reload and refresh"), \
641 REQ_(MAXIMIZE, "Maximize the current view"), \
642 REQ_(VIEW_CLOSE, "Close the current view"), \
643 REQ_(QUIT, "Close all views and quit"), \
644 \
645 REQ_GROUP("View specific requests") \
646 REQ_(STATUS_UPDATE, "Update file status"), \
647 REQ_(STATUS_REVERT, "Revert file changes"), \
648 REQ_(STATUS_MERGE, "Merge file using external tool"), \
649 REQ_(STAGE_NEXT, "Find next chunk to stage"), \
650 REQ_(TREE_PARENT, "Switch to parent directory in tree view"), \
651 \
652 REQ_GROUP("Cursor navigation") \
653 REQ_(MOVE_UP, "Move cursor one line up"), \
654 REQ_(MOVE_DOWN, "Move cursor one line down"), \
655 REQ_(MOVE_PAGE_DOWN, "Move cursor one page down"), \
656 REQ_(MOVE_PAGE_UP, "Move cursor one page up"), \
657 REQ_(MOVE_FIRST_LINE, "Move cursor to first line"), \
658 REQ_(MOVE_LAST_LINE, "Move cursor to last line"), \
659 \
660 REQ_GROUP("Scrolling") \
661 REQ_(SCROLL_LINE_UP, "Scroll one line up"), \
662 REQ_(SCROLL_LINE_DOWN, "Scroll one line down"), \
663 REQ_(SCROLL_PAGE_UP, "Scroll one page up"), \
664 REQ_(SCROLL_PAGE_DOWN, "Scroll one page down"), \
665 \
666 REQ_GROUP("Searching") \
667 REQ_(SEARCH, "Search the view"), \
668 REQ_(SEARCH_BACK, "Search backwards in the view"), \
669 REQ_(FIND_NEXT, "Find next search match"), \
670 REQ_(FIND_PREV, "Find previous search match"), \
671 \
672 REQ_GROUP("Option manipulation") \
673 REQ_(TOGGLE_LINENO, "Toggle line numbers"), \
674 REQ_(TOGGLE_DATE, "Toggle date display"), \
675 REQ_(TOGGLE_AUTHOR, "Toggle author display"), \
676 REQ_(TOGGLE_REV_GRAPH, "Toggle revision graph visualization"), \
677 REQ_(TOGGLE_REFS, "Toggle reference display (tags/branches)"), \
678 \
679 REQ_GROUP("Misc") \
680 REQ_(PROMPT, "Bring up the prompt"), \
681 REQ_(SCREEN_REDRAW, "Redraw the screen"), \
682 REQ_(SCREEN_RESIZE, "Resize the screen"), \
683 REQ_(SHOW_VERSION, "Show version information"), \
684 REQ_(STOP_LOADING, "Stop all loading views"), \
685 REQ_(EDIT, "Open in editor"), \
686 REQ_(NONE, "Do nothing")
689 /* User action requests. */
690 enum request {
691 #define REQ_GROUP(help)
692 #define REQ_(req, help) REQ_##req
694 /* Offset all requests to avoid conflicts with ncurses getch values. */
695 REQ_OFFSET = KEY_MAX + 1,
696 REQ_INFO
698 #undef REQ_GROUP
699 #undef REQ_
700 };
702 struct request_info {
703 enum request request;
704 const char *name;
705 int namelen;
706 const char *help;
707 };
709 static struct request_info req_info[] = {
710 #define REQ_GROUP(help) { 0, NULL, 0, (help) },
711 #define REQ_(req, help) { REQ_##req, (#req), STRING_SIZE(#req), (help) }
712 REQ_INFO
713 #undef REQ_GROUP
714 #undef REQ_
715 };
717 static enum request
718 get_request(const char *name)
719 {
720 int namelen = strlen(name);
721 int i;
723 for (i = 0; i < ARRAY_SIZE(req_info); i++)
724 if (req_info[i].namelen == namelen &&
725 !string_enum_compare(req_info[i].name, name, namelen))
726 return req_info[i].request;
728 return REQ_NONE;
729 }
732 /*
733 * Options
734 */
736 static const char usage[] =
737 "tig " TIG_VERSION " (" __DATE__ ")\n"
738 "\n"
739 "Usage: tig [options] [revs] [--] [paths]\n"
740 " or: tig show [options] [revs] [--] [paths]\n"
741 " or: tig blame [rev] path\n"
742 " or: tig status\n"
743 " or: tig < [git command output]\n"
744 "\n"
745 "Options:\n"
746 " -v, --version Show version and exit\n"
747 " -h, --help Show help message and exit";
749 /* Option and state variables. */
750 static bool opt_date = TRUE;
751 static bool opt_author = TRUE;
752 static bool opt_line_number = FALSE;
753 static bool opt_line_graphics = TRUE;
754 static bool opt_rev_graph = FALSE;
755 static bool opt_show_refs = TRUE;
756 static int opt_num_interval = NUMBER_INTERVAL;
757 static int opt_tab_size = TAB_SIZE;
758 static int opt_author_cols = AUTHOR_COLS-1;
759 static char opt_path[SIZEOF_STR] = "";
760 static char opt_file[SIZEOF_STR] = "";
761 static char opt_ref[SIZEOF_REF] = "";
762 static char opt_head[SIZEOF_REF] = "";
763 static char opt_head_rev[SIZEOF_REV] = "";
764 static char opt_remote[SIZEOF_REF] = "";
765 static char opt_encoding[20] = "UTF-8";
766 static bool opt_utf8 = TRUE;
767 static char opt_codeset[20] = "UTF-8";
768 static iconv_t opt_iconv = ICONV_NONE;
769 static char opt_search[SIZEOF_STR] = "";
770 static char opt_cdup[SIZEOF_STR] = "";
771 static char opt_git_dir[SIZEOF_STR] = "";
772 static signed char opt_is_inside_work_tree = -1; /* set to TRUE or FALSE */
773 static char opt_editor[SIZEOF_STR] = "";
774 static FILE *opt_tty = NULL;
776 #define is_initial_commit() (!*opt_head_rev)
777 #define is_head_commit(rev) (!strcmp((rev), "HEAD") || !strcmp(opt_head_rev, (rev)))
779 static enum request
780 parse_options(int argc, const char *argv[], const char ***run_argv)
781 {
782 enum request request = REQ_VIEW_MAIN;
783 const char *subcommand;
784 bool seen_dashdash = FALSE;
785 /* XXX: This is vulnerable to the user overriding options
786 * required for the main view parser. */
787 const char *custom_argv[SIZEOF_ARG] = {
788 "git", "log", "--no-color", "--pretty=raw", "--parents",
789 "--topo-order", NULL
790 };
791 int i, j = 6;
793 if (!isatty(STDIN_FILENO))
794 return REQ_VIEW_PAGER;
796 if (argc <= 1)
797 return REQ_VIEW_MAIN;
799 subcommand = argv[1];
800 if (!strcmp(subcommand, "status") || !strcmp(subcommand, "-S")) {
801 if (!strcmp(subcommand, "-S"))
802 warn("`-S' has been deprecated; use `tig status' instead");
803 if (argc > 2)
804 warn("ignoring arguments after `%s'", subcommand);
805 return REQ_VIEW_STATUS;
807 } else if (!strcmp(subcommand, "blame")) {
808 if (argc <= 2 || argc > 4)
809 die("invalid number of options to blame\n\n%s", usage);
811 i = 2;
812 if (argc == 4) {
813 string_ncopy(opt_ref, argv[i], strlen(argv[i]));
814 i++;
815 }
817 string_ncopy(opt_file, argv[i], strlen(argv[i]));
818 return REQ_VIEW_BLAME;
820 } else if (!strcmp(subcommand, "show")) {
821 request = REQ_VIEW_DIFF;
823 } else if (!strcmp(subcommand, "log") || !strcmp(subcommand, "diff")) {
824 request = subcommand[0] == 'l' ? REQ_VIEW_LOG : REQ_VIEW_DIFF;
825 warn("`tig %s' has been deprecated", subcommand);
827 } else {
828 subcommand = NULL;
829 }
831 if (subcommand) {
832 custom_argv[1] = subcommand;
833 j = 2;
834 }
836 for (i = 1 + !!subcommand; i < argc; i++) {
837 const char *opt = argv[i];
839 if (seen_dashdash || !strcmp(opt, "--")) {
840 seen_dashdash = TRUE;
842 } else if (!strcmp(opt, "-v") || !strcmp(opt, "--version")) {
843 printf("tig version %s\n", TIG_VERSION);
844 return REQ_NONE;
846 } else if (!strcmp(opt, "-h") || !strcmp(opt, "--help")) {
847 printf("%s\n", usage);
848 return REQ_NONE;
849 }
851 custom_argv[j++] = opt;
852 if (j >= ARRAY_SIZE(custom_argv))
853 die("command too long");
854 }
856 custom_argv[j] = NULL;
857 *run_argv = custom_argv;
859 return request;
860 }
863 /*
864 * Line-oriented content detection.
865 */
867 #define LINE_INFO \
868 LINE(DIFF_HEADER, "diff --git ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
869 LINE(DIFF_CHUNK, "@@", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
870 LINE(DIFF_ADD, "+", COLOR_GREEN, COLOR_DEFAULT, 0), \
871 LINE(DIFF_DEL, "-", COLOR_RED, COLOR_DEFAULT, 0), \
872 LINE(DIFF_INDEX, "index ", COLOR_BLUE, COLOR_DEFAULT, 0), \
873 LINE(DIFF_OLDMODE, "old file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
874 LINE(DIFF_NEWMODE, "new file mode ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
875 LINE(DIFF_COPY_FROM, "copy from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
876 LINE(DIFF_COPY_TO, "copy to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
877 LINE(DIFF_RENAME_FROM, "rename from", COLOR_YELLOW, COLOR_DEFAULT, 0), \
878 LINE(DIFF_RENAME_TO, "rename to", COLOR_YELLOW, COLOR_DEFAULT, 0), \
879 LINE(DIFF_SIMILARITY, "similarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
880 LINE(DIFF_DISSIMILARITY,"dissimilarity ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
881 LINE(DIFF_TREE, "diff-tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
882 LINE(PP_AUTHOR, "Author: ", COLOR_CYAN, COLOR_DEFAULT, 0), \
883 LINE(PP_COMMIT, "Commit: ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
884 LINE(PP_MERGE, "Merge: ", COLOR_BLUE, COLOR_DEFAULT, 0), \
885 LINE(PP_DATE, "Date: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
886 LINE(PP_ADATE, "AuthorDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
887 LINE(PP_CDATE, "CommitDate: ", COLOR_YELLOW, COLOR_DEFAULT, 0), \
888 LINE(PP_REFS, "Refs: ", COLOR_RED, COLOR_DEFAULT, 0), \
889 LINE(COMMIT, "commit ", COLOR_GREEN, COLOR_DEFAULT, 0), \
890 LINE(PARENT, "parent ", COLOR_BLUE, COLOR_DEFAULT, 0), \
891 LINE(TREE, "tree ", COLOR_BLUE, COLOR_DEFAULT, 0), \
892 LINE(AUTHOR, "author ", COLOR_CYAN, COLOR_DEFAULT, 0), \
893 LINE(COMMITTER, "committer ", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
894 LINE(SIGNOFF, " Signed-off-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
895 LINE(ACKED, " Acked-by", COLOR_YELLOW, COLOR_DEFAULT, 0), \
896 LINE(DEFAULT, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
897 LINE(CURSOR, "", COLOR_WHITE, COLOR_GREEN, A_BOLD), \
898 LINE(STATUS, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
899 LINE(DELIMITER, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
900 LINE(DATE, "", COLOR_BLUE, COLOR_DEFAULT, 0), \
901 LINE(LINE_NUMBER, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
902 LINE(TITLE_BLUR, "", COLOR_WHITE, COLOR_BLUE, 0), \
903 LINE(TITLE_FOCUS, "", COLOR_WHITE, COLOR_BLUE, A_BOLD), \
904 LINE(MAIN_AUTHOR, "", COLOR_GREEN, COLOR_DEFAULT, 0), \
905 LINE(MAIN_COMMIT, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
906 LINE(MAIN_TAG, "", COLOR_MAGENTA, COLOR_DEFAULT, A_BOLD), \
907 LINE(MAIN_LOCAL_TAG,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
908 LINE(MAIN_REMOTE, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
909 LINE(MAIN_TRACKED, "", COLOR_YELLOW, COLOR_DEFAULT, A_BOLD), \
910 LINE(MAIN_REF, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
911 LINE(MAIN_HEAD, "", COLOR_CYAN, COLOR_DEFAULT, A_BOLD), \
912 LINE(MAIN_REVGRAPH,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
913 LINE(TREE_DIR, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
914 LINE(TREE_FILE, "", COLOR_DEFAULT, COLOR_DEFAULT, A_NORMAL), \
915 LINE(STAT_HEAD, "", COLOR_YELLOW, COLOR_DEFAULT, 0), \
916 LINE(STAT_SECTION, "", COLOR_CYAN, COLOR_DEFAULT, 0), \
917 LINE(STAT_NONE, "", COLOR_DEFAULT, COLOR_DEFAULT, 0), \
918 LINE(STAT_STAGED, "", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
919 LINE(STAT_UNSTAGED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
920 LINE(STAT_UNTRACKED,"", COLOR_MAGENTA, COLOR_DEFAULT, 0), \
921 LINE(BLAME_ID, "", COLOR_MAGENTA, COLOR_DEFAULT, 0)
923 enum line_type {
924 #define LINE(type, line, fg, bg, attr) \
925 LINE_##type
926 LINE_INFO,
927 LINE_NONE
928 #undef LINE
929 };
931 struct line_info {
932 const char *name; /* Option name. */
933 int namelen; /* Size of option name. */
934 const char *line; /* The start of line to match. */
935 int linelen; /* Size of string to match. */
936 int fg, bg, attr; /* Color and text attributes for the lines. */
937 };
939 static struct line_info line_info[] = {
940 #define LINE(type, line, fg, bg, attr) \
941 { #type, STRING_SIZE(#type), (line), STRING_SIZE(line), (fg), (bg), (attr) }
942 LINE_INFO
943 #undef LINE
944 };
946 static enum line_type
947 get_line_type(const char *line)
948 {
949 int linelen = strlen(line);
950 enum line_type type;
952 for (type = 0; type < ARRAY_SIZE(line_info); type++)
953 /* Case insensitive search matches Signed-off-by lines better. */
954 if (linelen >= line_info[type].linelen &&
955 !strncasecmp(line_info[type].line, line, line_info[type].linelen))
956 return type;
958 return LINE_DEFAULT;
959 }
961 static inline int
962 get_line_attr(enum line_type type)
963 {
964 assert(type < ARRAY_SIZE(line_info));
965 return COLOR_PAIR(type) | line_info[type].attr;
966 }
968 static struct line_info *
969 get_line_info(const char *name)
970 {
971 size_t namelen = strlen(name);
972 enum line_type type;
974 for (type = 0; type < ARRAY_SIZE(line_info); type++)
975 if (namelen == line_info[type].namelen &&
976 !string_enum_compare(line_info[type].name, name, namelen))
977 return &line_info[type];
979 return NULL;
980 }
982 static void
983 init_colors(void)
984 {
985 int default_bg = line_info[LINE_DEFAULT].bg;
986 int default_fg = line_info[LINE_DEFAULT].fg;
987 enum line_type type;
989 start_color();
991 if (assume_default_colors(default_fg, default_bg) == ERR) {
992 default_bg = COLOR_BLACK;
993 default_fg = COLOR_WHITE;
994 }
996 for (type = 0; type < ARRAY_SIZE(line_info); type++) {
997 struct line_info *info = &line_info[type];
998 int bg = info->bg == COLOR_DEFAULT ? default_bg : info->bg;
999 int fg = info->fg == COLOR_DEFAULT ? default_fg : info->fg;
1001 init_pair(type, fg, bg);
1002 }
1003 }
1005 struct line {
1006 enum line_type type;
1008 /* State flags */
1009 unsigned int selected:1;
1010 unsigned int dirty:1;
1012 void *data; /* User data */
1013 };
1016 /*
1017 * Keys
1018 */
1020 struct keybinding {
1021 int alias;
1022 enum request request;
1023 };
1025 static struct keybinding default_keybindings[] = {
1026 /* View switching */
1027 { 'm', REQ_VIEW_MAIN },
1028 { 'd', REQ_VIEW_DIFF },
1029 { 'l', REQ_VIEW_LOG },
1030 { 't', REQ_VIEW_TREE },
1031 { 'f', REQ_VIEW_BLOB },
1032 { 'B', REQ_VIEW_BLAME },
1033 { 'p', REQ_VIEW_PAGER },
1034 { 'h', REQ_VIEW_HELP },
1035 { 'S', REQ_VIEW_STATUS },
1036 { 'c', REQ_VIEW_STAGE },
1038 /* View manipulation */
1039 { 'q', REQ_VIEW_CLOSE },
1040 { KEY_TAB, REQ_VIEW_NEXT },
1041 { KEY_RETURN, REQ_ENTER },
1042 { KEY_UP, REQ_PREVIOUS },
1043 { KEY_DOWN, REQ_NEXT },
1044 { 'R', REQ_REFRESH },
1045 { KEY_F(5), REQ_REFRESH },
1046 { 'O', REQ_MAXIMIZE },
1048 /* Cursor navigation */
1049 { 'k', REQ_MOVE_UP },
1050 { 'j', REQ_MOVE_DOWN },
1051 { KEY_HOME, REQ_MOVE_FIRST_LINE },
1052 { KEY_END, REQ_MOVE_LAST_LINE },
1053 { KEY_NPAGE, REQ_MOVE_PAGE_DOWN },
1054 { ' ', REQ_MOVE_PAGE_DOWN },
1055 { KEY_PPAGE, REQ_MOVE_PAGE_UP },
1056 { 'b', REQ_MOVE_PAGE_UP },
1057 { '-', REQ_MOVE_PAGE_UP },
1059 /* Scrolling */
1060 { KEY_IC, REQ_SCROLL_LINE_UP },
1061 { KEY_DC, REQ_SCROLL_LINE_DOWN },
1062 { 'w', REQ_SCROLL_PAGE_UP },
1063 { 's', REQ_SCROLL_PAGE_DOWN },
1065 /* Searching */
1066 { '/', REQ_SEARCH },
1067 { '?', REQ_SEARCH_BACK },
1068 { 'n', REQ_FIND_NEXT },
1069 { 'N', REQ_FIND_PREV },
1071 /* Misc */
1072 { 'Q', REQ_QUIT },
1073 { 'z', REQ_STOP_LOADING },
1074 { 'v', REQ_SHOW_VERSION },
1075 { 'r', REQ_SCREEN_REDRAW },
1076 { '.', REQ_TOGGLE_LINENO },
1077 { 'D', REQ_TOGGLE_DATE },
1078 { 'A', REQ_TOGGLE_AUTHOR },
1079 { 'g', REQ_TOGGLE_REV_GRAPH },
1080 { 'F', REQ_TOGGLE_REFS },
1081 { ':', REQ_PROMPT },
1082 { 'u', REQ_STATUS_UPDATE },
1083 { '!', REQ_STATUS_REVERT },
1084 { 'M', REQ_STATUS_MERGE },
1085 { '@', REQ_STAGE_NEXT },
1086 { ',', REQ_TREE_PARENT },
1087 { 'e', REQ_EDIT },
1089 /* Using the ncurses SIGWINCH handler. */
1090 { KEY_RESIZE, REQ_SCREEN_RESIZE },
1091 };
1093 #define KEYMAP_INFO \
1094 KEYMAP_(GENERIC), \
1095 KEYMAP_(MAIN), \
1096 KEYMAP_(DIFF), \
1097 KEYMAP_(LOG), \
1098 KEYMAP_(TREE), \
1099 KEYMAP_(BLOB), \
1100 KEYMAP_(BLAME), \
1101 KEYMAP_(PAGER), \
1102 KEYMAP_(HELP), \
1103 KEYMAP_(STATUS), \
1104 KEYMAP_(STAGE)
1106 enum keymap {
1107 #define KEYMAP_(name) KEYMAP_##name
1108 KEYMAP_INFO
1109 #undef KEYMAP_
1110 };
1112 static struct int_map keymap_table[] = {
1113 #define KEYMAP_(name) { #name, STRING_SIZE(#name), KEYMAP_##name }
1114 KEYMAP_INFO
1115 #undef KEYMAP_
1116 };
1118 #define set_keymap(map, name) \
1119 set_from_int_map(keymap_table, ARRAY_SIZE(keymap_table), map, name, strlen(name))
1121 struct keybinding_table {
1122 struct keybinding *data;
1123 size_t size;
1124 };
1126 static struct keybinding_table keybindings[ARRAY_SIZE(keymap_table)];
1128 static void
1129 add_keybinding(enum keymap keymap, enum request request, int key)
1130 {
1131 struct keybinding_table *table = &keybindings[keymap];
1133 table->data = realloc(table->data, (table->size + 1) * sizeof(*table->data));
1134 if (!table->data)
1135 die("Failed to allocate keybinding");
1136 table->data[table->size].alias = key;
1137 table->data[table->size++].request = request;
1138 }
1140 /* Looks for a key binding first in the given map, then in the generic map, and
1141 * lastly in the default keybindings. */
1142 static enum request
1143 get_keybinding(enum keymap keymap, int key)
1144 {
1145 size_t i;
1147 for (i = 0; i < keybindings[keymap].size; i++)
1148 if (keybindings[keymap].data[i].alias == key)
1149 return keybindings[keymap].data[i].request;
1151 for (i = 0; i < keybindings[KEYMAP_GENERIC].size; i++)
1152 if (keybindings[KEYMAP_GENERIC].data[i].alias == key)
1153 return keybindings[KEYMAP_GENERIC].data[i].request;
1155 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++)
1156 if (default_keybindings[i].alias == key)
1157 return default_keybindings[i].request;
1159 return (enum request) key;
1160 }
1163 struct key {
1164 const char *name;
1165 int value;
1166 };
1168 static struct key key_table[] = {
1169 { "Enter", KEY_RETURN },
1170 { "Space", ' ' },
1171 { "Backspace", KEY_BACKSPACE },
1172 { "Tab", KEY_TAB },
1173 { "Escape", KEY_ESC },
1174 { "Left", KEY_LEFT },
1175 { "Right", KEY_RIGHT },
1176 { "Up", KEY_UP },
1177 { "Down", KEY_DOWN },
1178 { "Insert", KEY_IC },
1179 { "Delete", KEY_DC },
1180 { "Hash", '#' },
1181 { "Home", KEY_HOME },
1182 { "End", KEY_END },
1183 { "PageUp", KEY_PPAGE },
1184 { "PageDown", KEY_NPAGE },
1185 { "F1", KEY_F(1) },
1186 { "F2", KEY_F(2) },
1187 { "F3", KEY_F(3) },
1188 { "F4", KEY_F(4) },
1189 { "F5", KEY_F(5) },
1190 { "F6", KEY_F(6) },
1191 { "F7", KEY_F(7) },
1192 { "F8", KEY_F(8) },
1193 { "F9", KEY_F(9) },
1194 { "F10", KEY_F(10) },
1195 { "F11", KEY_F(11) },
1196 { "F12", KEY_F(12) },
1197 };
1199 static int
1200 get_key_value(const char *name)
1201 {
1202 int i;
1204 for (i = 0; i < ARRAY_SIZE(key_table); i++)
1205 if (!strcasecmp(key_table[i].name, name))
1206 return key_table[i].value;
1208 if (strlen(name) == 1 && isprint(*name))
1209 return (int) *name;
1211 return ERR;
1212 }
1214 static const char *
1215 get_key_name(int key_value)
1216 {
1217 static char key_char[] = "'X'";
1218 const char *seq = NULL;
1219 int key;
1221 for (key = 0; key < ARRAY_SIZE(key_table); key++)
1222 if (key_table[key].value == key_value)
1223 seq = key_table[key].name;
1225 if (seq == NULL &&
1226 key_value < 127 &&
1227 isprint(key_value)) {
1228 key_char[1] = (char) key_value;
1229 seq = key_char;
1230 }
1232 return seq ? seq : "(no key)";
1233 }
1235 static const char *
1236 get_key(enum request request)
1237 {
1238 static char buf[BUFSIZ];
1239 size_t pos = 0;
1240 char *sep = "";
1241 int i;
1243 buf[pos] = 0;
1245 for (i = 0; i < ARRAY_SIZE(default_keybindings); i++) {
1246 struct keybinding *keybinding = &default_keybindings[i];
1248 if (keybinding->request != request)
1249 continue;
1251 if (!string_format_from(buf, &pos, "%s%s", sep,
1252 get_key_name(keybinding->alias)))
1253 return "Too many keybindings!";
1254 sep = ", ";
1255 }
1257 return buf;
1258 }
1260 struct run_request {
1261 enum keymap keymap;
1262 int key;
1263 const char *argv[SIZEOF_ARG];
1264 };
1266 static struct run_request *run_request;
1267 static size_t run_requests;
1269 static enum request
1270 add_run_request(enum keymap keymap, int key, int argc, const char **argv)
1271 {
1272 struct run_request *req;
1274 if (argc >= ARRAY_SIZE(req->argv) - 1)
1275 return REQ_NONE;
1277 req = realloc(run_request, (run_requests + 1) * sizeof(*run_request));
1278 if (!req)
1279 return REQ_NONE;
1281 run_request = req;
1282 req = &run_request[run_requests];
1283 req->keymap = keymap;
1284 req->key = key;
1285 req->argv[0] = NULL;
1287 if (!format_argv(req->argv, argv, FORMAT_NONE))
1288 return REQ_NONE;
1290 return REQ_NONE + ++run_requests;
1291 }
1293 static struct run_request *
1294 get_run_request(enum request request)
1295 {
1296 if (request <= REQ_NONE)
1297 return NULL;
1298 return &run_request[request - REQ_NONE - 1];
1299 }
1301 static void
1302 add_builtin_run_requests(void)
1303 {
1304 const char *cherry_pick[] = { "git", "cherry-pick", "%(commit)", NULL };
1305 const char *gc[] = { "git", "gc", NULL };
1306 struct {
1307 enum keymap keymap;
1308 int key;
1309 int argc;
1310 const char **argv;
1311 } reqs[] = {
1312 { KEYMAP_MAIN, 'C', ARRAY_SIZE(cherry_pick) - 1, cherry_pick },
1313 { KEYMAP_GENERIC, 'G', ARRAY_SIZE(gc) - 1, gc },
1314 };
1315 int i;
1317 for (i = 0; i < ARRAY_SIZE(reqs); i++) {
1318 enum request req;
1320 req = add_run_request(reqs[i].keymap, reqs[i].key, reqs[i].argc, reqs[i].argv);
1321 if (req != REQ_NONE)
1322 add_keybinding(reqs[i].keymap, req, reqs[i].key);
1323 }
1324 }
1326 /*
1327 * User config file handling.
1328 */
1330 static struct int_map color_map[] = {
1331 #define COLOR_MAP(name) { #name, STRING_SIZE(#name), COLOR_##name }
1332 COLOR_MAP(DEFAULT),
1333 COLOR_MAP(BLACK),
1334 COLOR_MAP(BLUE),
1335 COLOR_MAP(CYAN),
1336 COLOR_MAP(GREEN),
1337 COLOR_MAP(MAGENTA),
1338 COLOR_MAP(RED),
1339 COLOR_MAP(WHITE),
1340 COLOR_MAP(YELLOW),
1341 };
1343 #define set_color(color, name) \
1344 set_from_int_map(color_map, ARRAY_SIZE(color_map), color, name, strlen(name))
1346 static struct int_map attr_map[] = {
1347 #define ATTR_MAP(name) { #name, STRING_SIZE(#name), A_##name }
1348 ATTR_MAP(NORMAL),
1349 ATTR_MAP(BLINK),
1350 ATTR_MAP(BOLD),
1351 ATTR_MAP(DIM),
1352 ATTR_MAP(REVERSE),
1353 ATTR_MAP(STANDOUT),
1354 ATTR_MAP(UNDERLINE),
1355 };
1357 #define set_attribute(attr, name) \
1358 set_from_int_map(attr_map, ARRAY_SIZE(attr_map), attr, name, strlen(name))
1360 static int config_lineno;
1361 static bool config_errors;
1362 static const char *config_msg;
1364 /* Wants: object fgcolor bgcolor [attr] */
1365 static int
1366 option_color_command(int argc, const char *argv[])
1367 {
1368 struct line_info *info;
1370 if (argc != 3 && argc != 4) {
1371 config_msg = "Wrong number of arguments given to color command";
1372 return ERR;
1373 }
1375 info = get_line_info(argv[0]);
1376 if (!info) {
1377 if (!string_enum_compare(argv[0], "main-delim", strlen("main-delim"))) {
1378 info = get_line_info("delimiter");
1380 } else if (!string_enum_compare(argv[0], "main-date", strlen("main-date"))) {
1381 info = get_line_info("date");
1383 } else {
1384 config_msg = "Unknown color name";
1385 return ERR;
1386 }
1387 }
1389 if (set_color(&info->fg, argv[1]) == ERR ||
1390 set_color(&info->bg, argv[2]) == ERR) {
1391 config_msg = "Unknown color";
1392 return ERR;
1393 }
1395 if (argc == 4 && set_attribute(&info->attr, argv[3]) == ERR) {
1396 config_msg = "Unknown attribute";
1397 return ERR;
1398 }
1400 return OK;
1401 }
1403 static bool parse_bool(const char *s)
1404 {
1405 return (!strcmp(s, "1") || !strcmp(s, "true") ||
1406 !strcmp(s, "yes")) ? TRUE : FALSE;
1407 }
1409 static int
1410 parse_int(const char *s, int default_value, int min, int max)
1411 {
1412 int value = atoi(s);
1414 return (value < min || value > max) ? default_value : value;
1415 }
1417 /* Wants: name = value */
1418 static int
1419 option_set_command(int argc, const char *argv[])
1420 {
1421 if (argc != 3) {
1422 config_msg = "Wrong number of arguments given to set command";
1423 return ERR;
1424 }
1426 if (strcmp(argv[1], "=")) {
1427 config_msg = "No value assigned";
1428 return ERR;
1429 }
1431 if (!strcmp(argv[0], "show-author")) {
1432 opt_author = parse_bool(argv[2]);
1433 return OK;
1434 }
1436 if (!strcmp(argv[0], "show-date")) {
1437 opt_date = parse_bool(argv[2]);
1438 return OK;
1439 }
1441 if (!strcmp(argv[0], "show-rev-graph")) {
1442 opt_rev_graph = parse_bool(argv[2]);
1443 return OK;
1444 }
1446 if (!strcmp(argv[0], "show-refs")) {
1447 opt_show_refs = parse_bool(argv[2]);
1448 return OK;
1449 }
1451 if (!strcmp(argv[0], "show-line-numbers")) {
1452 opt_line_number = parse_bool(argv[2]);
1453 return OK;
1454 }
1456 if (!strcmp(argv[0], "line-graphics")) {
1457 opt_line_graphics = parse_bool(argv[2]);
1458 return OK;
1459 }
1461 if (!strcmp(argv[0], "line-number-interval")) {
1462 opt_num_interval = parse_int(argv[2], opt_num_interval, 1, 1024);
1463 return OK;
1464 }
1466 if (!strcmp(argv[0], "author-width")) {
1467 opt_author_cols = parse_int(argv[2], opt_author_cols, 0, 1024);
1468 return OK;
1469 }
1471 if (!strcmp(argv[0], "tab-size")) {
1472 opt_tab_size = parse_int(argv[2], opt_tab_size, 1, 1024);
1473 return OK;
1474 }
1476 if (!strcmp(argv[0], "commit-encoding")) {
1477 const char *arg = argv[2];
1478 int arglen = strlen(arg);
1480 switch (arg[0]) {
1481 case '"':
1482 case '\'':
1483 if (arglen == 1 || arg[arglen - 1] != arg[0]) {
1484 config_msg = "Unmatched quotation";
1485 return ERR;
1486 }
1487 arg += 1; arglen -= 2;
1488 default:
1489 string_ncopy(opt_encoding, arg, strlen(arg));
1490 return OK;
1491 }
1492 }
1494 config_msg = "Unknown variable name";
1495 return ERR;
1496 }
1498 /* Wants: mode request key */
1499 static int
1500 option_bind_command(int argc, const char *argv[])
1501 {
1502 enum request request;
1503 int keymap;
1504 int key;
1506 if (argc < 3) {
1507 config_msg = "Wrong number of arguments given to bind command";
1508 return ERR;
1509 }
1511 if (set_keymap(&keymap, argv[0]) == ERR) {
1512 config_msg = "Unknown key map";
1513 return ERR;
1514 }
1516 key = get_key_value(argv[1]);
1517 if (key == ERR) {
1518 config_msg = "Unknown key";
1519 return ERR;
1520 }
1522 request = get_request(argv[2]);
1523 if (request == REQ_NONE) {
1524 const char *obsolete[] = { "cherry-pick" };
1525 size_t namelen = strlen(argv[2]);
1526 int i;
1528 for (i = 0; i < ARRAY_SIZE(obsolete); i++) {
1529 if (namelen == strlen(obsolete[i]) &&
1530 !string_enum_compare(obsolete[i], argv[2], namelen)) {
1531 config_msg = "Obsolete request name";
1532 return ERR;
1533 }
1534 }
1535 }
1536 if (request == REQ_NONE && *argv[2]++ == '!')
1537 request = add_run_request(keymap, key, argc - 2, argv + 2);
1538 if (request == REQ_NONE) {
1539 config_msg = "Unknown request name";
1540 return ERR;
1541 }
1543 add_keybinding(keymap, request, key);
1545 return OK;
1546 }
1548 static int
1549 set_option(const char *opt, char *value)
1550 {
1551 const char *argv[SIZEOF_ARG];
1552 int argc = 0;
1554 if (!argv_from_string(argv, &argc, value)) {
1555 config_msg = "Too many option arguments";
1556 return ERR;
1557 }
1559 if (!strcmp(opt, "color"))
1560 return option_color_command(argc, argv);
1562 if (!strcmp(opt, "set"))
1563 return option_set_command(argc, argv);
1565 if (!strcmp(opt, "bind"))
1566 return option_bind_command(argc, argv);
1568 config_msg = "Unknown option command";
1569 return ERR;
1570 }
1572 static int
1573 read_option(char *opt, size_t optlen, char *value, size_t valuelen)
1574 {
1575 int status = OK;
1577 config_lineno++;
1578 config_msg = "Internal error";
1580 /* Check for comment markers, since read_properties() will
1581 * only ensure opt and value are split at first " \t". */
1582 optlen = strcspn(opt, "#");
1583 if (optlen == 0)
1584 return OK;
1586 if (opt[optlen] != 0) {
1587 config_msg = "No option value";
1588 status = ERR;
1590 } else {
1591 /* Look for comment endings in the value. */
1592 size_t len = strcspn(value, "#");
1594 if (len < valuelen) {
1595 valuelen = len;
1596 value[valuelen] = 0;
1597 }
1599 status = set_option(opt, value);
1600 }
1602 if (status == ERR) {
1603 fprintf(stderr, "Error on line %d, near '%.*s': %s\n",
1604 config_lineno, (int) optlen, opt, config_msg);
1605 config_errors = TRUE;
1606 }
1608 /* Always keep going if errors are encountered. */
1609 return OK;
1610 }
1612 static void
1613 load_option_file(const char *path)
1614 {
1615 struct io io = {};
1617 /* It's ok that the file doesn't exist. */
1618 if (!io_open(&io, path))
1619 return;
1621 config_lineno = 0;
1622 config_errors = FALSE;
1624 if (read_properties(&io, " \t", read_option) == ERR ||
1625 config_errors == TRUE)
1626 fprintf(stderr, "Errors while loading %s.\n", path);
1627 }
1629 static int
1630 load_options(void)
1631 {
1632 const char *home = getenv("HOME");
1633 const char *tigrc_user = getenv("TIGRC_USER");
1634 const char *tigrc_system = getenv("TIGRC_SYSTEM");
1635 char buf[SIZEOF_STR];
1637 add_builtin_run_requests();
1639 if (!tigrc_system) {
1640 if (!string_format(buf, "%s/tigrc", SYSCONFDIR))
1641 return ERR;
1642 tigrc_system = buf;
1643 }
1644 load_option_file(tigrc_system);
1646 if (!tigrc_user) {
1647 if (!home || !string_format(buf, "%s/.tigrc", home))
1648 return ERR;
1649 tigrc_user = buf;
1650 }
1651 load_option_file(tigrc_user);
1653 return OK;
1654 }
1657 /*
1658 * The viewer
1659 */
1661 struct view;
1662 struct view_ops;
1664 /* The display array of active views and the index of the current view. */
1665 static struct view *display[2];
1666 static unsigned int current_view;
1668 /* Reading from the prompt? */
1669 static bool input_mode = FALSE;
1671 #define foreach_displayed_view(view, i) \
1672 for (i = 0; i < ARRAY_SIZE(display) && (view = display[i]); i++)
1674 #define displayed_views() (display[1] != NULL ? 2 : 1)
1676 /* Current head and commit ID */
1677 static char ref_blob[SIZEOF_REF] = "";
1678 static char ref_commit[SIZEOF_REF] = "HEAD";
1679 static char ref_head[SIZEOF_REF] = "HEAD";
1681 struct view {
1682 const char *name; /* View name */
1683 const char *cmd_env; /* Command line set via environment */
1684 const char *id; /* Points to either of ref_{head,commit,blob} */
1686 struct view_ops *ops; /* View operations */
1688 enum keymap keymap; /* What keymap does this view have */
1689 bool git_dir; /* Whether the view requires a git directory. */
1691 char ref[SIZEOF_REF]; /* Hovered commit reference */
1692 char vid[SIZEOF_REF]; /* View ID. Set to id member when updating. */
1694 int height, width; /* The width and height of the main window */
1695 WINDOW *win; /* The main window */
1696 WINDOW *title; /* The title window living below the main window */
1698 /* Navigation */
1699 unsigned long offset; /* Offset of the window top */
1700 unsigned long lineno; /* Current line number */
1702 /* Searching */
1703 char grep[SIZEOF_STR]; /* Search string */
1704 regex_t *regex; /* Pre-compiled regex */
1706 /* If non-NULL, points to the view that opened this view. If this view
1707 * is closed tig will switch back to the parent view. */
1708 struct view *parent;
1710 /* Buffering */
1711 size_t lines; /* Total number of lines */
1712 struct line *line; /* Line index */
1713 size_t line_alloc; /* Total number of allocated lines */
1714 size_t line_size; /* Total number of used lines */
1715 unsigned int digits; /* Number of digits in the lines member. */
1717 /* Drawing */
1718 struct line *curline; /* Line currently being drawn. */
1719 enum line_type curtype; /* Attribute currently used for drawing. */
1720 unsigned long col; /* Column when drawing. */
1722 /* Loading */
1723 struct io io;
1724 struct io *pipe;
1725 time_t start_time;
1726 };
1728 struct view_ops {
1729 /* What type of content being displayed. Used in the title bar. */
1730 const char *type;
1731 /* Default command arguments. */
1732 const char **argv;
1733 /* Open and reads in all view content. */
1734 bool (*open)(struct view *view);
1735 /* Read one line; updates view->line. */
1736 bool (*read)(struct view *view, char *data);
1737 /* Draw one line; @lineno must be < view->height. */
1738 bool (*draw)(struct view *view, struct line *line, unsigned int lineno);
1739 /* Depending on view handle a special requests. */
1740 enum request (*request)(struct view *view, enum request request, struct line *line);
1741 /* Search for regex in a line. */
1742 bool (*grep)(struct view *view, struct line *line);
1743 /* Select line */
1744 void (*select)(struct view *view, struct line *line);
1745 };
1747 static struct view_ops blame_ops;
1748 static struct view_ops blob_ops;
1749 static struct view_ops diff_ops;
1750 static struct view_ops help_ops;
1751 static struct view_ops log_ops;
1752 static struct view_ops main_ops;
1753 static struct view_ops pager_ops;
1754 static struct view_ops stage_ops;
1755 static struct view_ops status_ops;
1756 static struct view_ops tree_ops;
1758 #define VIEW_STR(name, env, ref, ops, map, git) \
1759 { name, #env, ref, ops, map, git }
1761 #define VIEW_(id, name, ops, git, ref) \
1762 VIEW_STR(name, TIG_##id##_CMD, ref, ops, KEYMAP_##id, git)
1765 static struct view views[] = {
1766 VIEW_(MAIN, "main", &main_ops, TRUE, ref_head),
1767 VIEW_(DIFF, "diff", &diff_ops, TRUE, ref_commit),
1768 VIEW_(LOG, "log", &log_ops, TRUE, ref_head),
1769 VIEW_(TREE, "tree", &tree_ops, TRUE, ref_commit),
1770 VIEW_(BLOB, "blob", &blob_ops, TRUE, ref_blob),
1771 VIEW_(BLAME, "blame", &blame_ops, TRUE, ref_commit),
1772 VIEW_(HELP, "help", &help_ops, FALSE, ""),
1773 VIEW_(PAGER, "pager", &pager_ops, FALSE, "stdin"),
1774 VIEW_(STATUS, "status", &status_ops, TRUE, ""),
1775 VIEW_(STAGE, "stage", &stage_ops, TRUE, ""),
1776 };
1778 #define VIEW(req) (&views[(req) - REQ_OFFSET - 1])
1779 #define VIEW_REQ(view) ((view) - views + REQ_OFFSET + 1)
1781 #define foreach_view(view, i) \
1782 for (i = 0; i < ARRAY_SIZE(views) && (view = &views[i]); i++)
1784 #define view_is_displayed(view) \
1785 (view == display[0] || view == display[1])
1788 enum line_graphic {
1789 LINE_GRAPHIC_VLINE
1790 };
1792 static int line_graphics[] = {
1793 /* LINE_GRAPHIC_VLINE: */ '|'
1794 };
1796 static inline void
1797 set_view_attr(struct view *view, enum line_type type)
1798 {
1799 if (!view->curline->selected && view->curtype != type) {
1800 wattrset(view->win, get_line_attr(type));
1801 wchgat(view->win, -1, 0, type, NULL);
1802 view->curtype = type;
1803 }
1804 }
1806 static int
1807 draw_chars(struct view *view, enum line_type type, const char *string,
1808 int max_len, bool use_tilde)
1809 {
1810 int len = 0;
1811 int col = 0;
1812 int trimmed = FALSE;
1814 if (max_len <= 0)
1815 return 0;
1817 if (opt_utf8) {
1818 len = utf8_length(string, &col, max_len, &trimmed, use_tilde);
1819 } else {
1820 col = len = strlen(string);
1821 if (len > max_len) {
1822 if (use_tilde) {
1823 max_len -= 1;
1824 }
1825 col = len = max_len;
1826 trimmed = TRUE;
1827 }
1828 }
1830 set_view_attr(view, type);
1831 waddnstr(view->win, string, len);
1832 if (trimmed && use_tilde) {
1833 set_view_attr(view, LINE_DELIMITER);
1834 waddch(view->win, '~');
1835 col++;
1836 }
1838 return col;
1839 }
1841 static int
1842 draw_space(struct view *view, enum line_type type, int max, int spaces)
1843 {
1844 static char space[] = " ";
1845 int col = 0;
1847 spaces = MIN(max, spaces);
1849 while (spaces > 0) {
1850 int len = MIN(spaces, sizeof(space) - 1);
1852 col += draw_chars(view, type, space, spaces, FALSE);
1853 spaces -= len;
1854 }
1856 return col;
1857 }
1859 static bool
1860 draw_lineno(struct view *view, unsigned int lineno)
1861 {
1862 char number[10];
1863 int digits3 = view->digits < 3 ? 3 : view->digits;
1864 int max_number = MIN(digits3, STRING_SIZE(number));
1865 int max = view->width - view->col;
1866 int col;
1868 if (max < max_number)
1869 max_number = max;
1871 lineno += view->offset + 1;
1872 if (lineno == 1 || (lineno % opt_num_interval) == 0) {
1873 static char fmt[] = "%1ld";
1875 if (view->digits <= 9)
1876 fmt[1] = '0' + digits3;
1878 if (!string_format(number, fmt, lineno))
1879 number[0] = 0;
1880 col = draw_chars(view, LINE_LINE_NUMBER, number, max_number, TRUE);
1881 } else {
1882 col = draw_space(view, LINE_LINE_NUMBER, max_number, max_number);
1883 }
1885 if (col < max) {
1886 set_view_attr(view, LINE_DEFAULT);
1887 waddch(view->win, line_graphics[LINE_GRAPHIC_VLINE]);
1888 col++;
1889 }
1891 if (col < max)
1892 col += draw_space(view, LINE_DEFAULT, max - col, 1);
1893 view->col += col;
1895 return view->width - view->col <= 0;
1896 }
1898 static bool
1899 draw_text(struct view *view, enum line_type type, const char *string, bool trim)
1900 {
1901 view->col += draw_chars(view, type, string, view->width - view->col, trim);
1902 return view->width - view->col <= 0;
1903 }
1905 static bool
1906 draw_graphic(struct view *view, enum line_type type, chtype graphic[], size_t size)
1907 {
1908 int max = view->width - view->col;
1909 int i;
1911 if (max < size)
1912 size = max;
1914 set_view_attr(view, type);
1915 /* Using waddch() instead of waddnstr() ensures that
1916 * they'll be rendered correctly for the cursor line. */
1917 for (i = 0; i < size; i++)
1918 waddch(view->win, graphic[i]);
1920 view->col += size;
1921 if (size < max) {
1922 waddch(view->win, ' ');
1923 view->col++;
1924 }
1926 return view->width - view->col <= 0;
1927 }
1929 static bool
1930 draw_field(struct view *view, enum line_type type, const char *text, int len, bool trim)
1931 {
1932 int max = MIN(view->width - view->col, len);
1933 int col;
1935 if (text)
1936 col = draw_chars(view, type, text, max - 1, trim);
1937 else
1938 col = draw_space(view, type, max - 1, max - 1);
1940 view->col += col + draw_space(view, LINE_DEFAULT, max - col, max - col);
1941 return view->width - view->col <= 0;
1942 }
1944 static bool
1945 draw_date(struct view *view, struct tm *time)
1946 {
1947 char buf[DATE_COLS];
1948 char *date;
1949 int timelen = 0;
1951 if (time)
1952 timelen = strftime(buf, sizeof(buf), DATE_FORMAT, time);
1953 date = timelen ? buf : NULL;
1955 return draw_field(view, LINE_DATE, date, DATE_COLS, FALSE);
1956 }
1958 static bool
1959 draw_view_line(struct view *view, unsigned int lineno)
1960 {
1961 struct line *line;
1962 bool selected = (view->offset + lineno == view->lineno);
1963 bool draw_ok;
1965 assert(view_is_displayed(view));
1967 if (view->offset + lineno >= view->lines)
1968 return FALSE;
1970 line = &view->line[view->offset + lineno];
1972 wmove(view->win, lineno, 0);
1973 view->col = 0;
1974 view->curline = line;
1975 view->curtype = LINE_NONE;
1976 line->selected = FALSE;
1978 if (selected) {
1979 set_view_attr(view, LINE_CURSOR);
1980 line->selected = TRUE;
1981 view->ops->select(view, line);
1982 } else if (line->selected) {
1983 wclrtoeol(view->win);
1984 }
1986 scrollok(view->win, FALSE);
1987 draw_ok = view->ops->draw(view, line, lineno);
1988 scrollok(view->win, TRUE);
1990 return draw_ok;
1991 }
1993 static void
1994 redraw_view_dirty(struct view *view)
1995 {
1996 bool dirty = FALSE;
1997 int lineno;
1999 for (lineno = 0; lineno < view->height; lineno++) {
2000 struct line *line = &view->line[view->offset + lineno];
2002 if (!line->dirty)
2003 continue;
2004 line->dirty = 0;
2005 dirty = TRUE;
2006 if (!draw_view_line(view, lineno))
2007 break;
2008 }
2010 if (!dirty)
2011 return;
2012 redrawwin(view->win);
2013 if (input_mode)
2014 wnoutrefresh(view->win);
2015 else
2016 wrefresh(view->win);
2017 }
2019 static void
2020 redraw_view_from(struct view *view, int lineno)
2021 {
2022 assert(0 <= lineno && lineno < view->height);
2024 for (; lineno < view->height; lineno++) {
2025 if (!draw_view_line(view, lineno))
2026 break;
2027 }
2029 redrawwin(view->win);
2030 if (input_mode)
2031 wnoutrefresh(view->win);
2032 else
2033 wrefresh(view->win);
2034 }
2036 static void
2037 redraw_view(struct view *view)
2038 {
2039 wclear(view->win);
2040 redraw_view_from(view, 0);
2041 }
2044 static void
2045 update_view_title(struct view *view)
2046 {
2047 char buf[SIZEOF_STR];
2048 char state[SIZEOF_STR];
2049 size_t bufpos = 0, statelen = 0;
2051 assert(view_is_displayed(view));
2053 if (view != VIEW(REQ_VIEW_STATUS) && (view->lines || view->pipe)) {
2054 unsigned int view_lines = view->offset + view->height;
2055 unsigned int lines = view->lines
2056 ? MIN(view_lines, view->lines) * 100 / view->lines
2057 : 0;
2059 string_format_from(state, &statelen, "- %s %d of %d (%d%%)",
2060 view->ops->type,
2061 view->lineno + 1,
2062 view->lines,
2063 lines);
2065 if (view->pipe) {
2066 time_t secs = time(NULL) - view->start_time;
2068 /* Three git seconds are a long time ... */
2069 if (secs > 2)
2070 string_format_from(state, &statelen, " %lds", secs);
2071 }
2072 }
2074 string_format_from(buf, &bufpos, "[%s]", view->name);
2075 if (*view->ref && bufpos < view->width) {
2076 size_t refsize = strlen(view->ref);
2077 size_t minsize = bufpos + 1 + /* abbrev= */ 7 + 1 + statelen;
2079 if (minsize < view->width)
2080 refsize = view->width - minsize + 7;
2081 string_format_from(buf, &bufpos, " %.*s", (int) refsize, view->ref);
2082 }
2084 if (statelen && bufpos < view->width) {
2085 string_format_from(buf, &bufpos, " %s", state);
2086 }
2088 if (view == display[current_view])
2089 wbkgdset(view->title, get_line_attr(LINE_TITLE_FOCUS));
2090 else
2091 wbkgdset(view->title, get_line_attr(LINE_TITLE_BLUR));
2093 mvwaddnstr(view->title, 0, 0, buf, bufpos);
2094 wclrtoeol(view->title);
2095 wmove(view->title, 0, view->width - 1);
2097 if (input_mode)
2098 wnoutrefresh(view->title);
2099 else
2100 wrefresh(view->title);
2101 }
2103 static void
2104 resize_display(void)
2105 {
2106 int offset, i;
2107 struct view *base = display[0];
2108 struct view *view = display[1] ? display[1] : display[0];
2110 /* Setup window dimensions */
2112 getmaxyx(stdscr, base->height, base->width);
2114 /* Make room for the status window. */
2115 base->height -= 1;
2117 if (view != base) {
2118 /* Horizontal split. */
2119 view->width = base->width;
2120 view->height = SCALE_SPLIT_VIEW(base->height);
2121 base->height -= view->height;
2123 /* Make room for the title bar. */
2124 view->height -= 1;
2125 }
2127 /* Make room for the title bar. */
2128 base->height -= 1;
2130 offset = 0;
2132 foreach_displayed_view (view, i) {
2133 if (!view->win) {
2134 view->win = newwin(view->height, 0, offset, 0);
2135 if (!view->win)
2136 die("Failed to create %s view", view->name);
2138 scrollok(view->win, TRUE);
2140 view->title = newwin(1, 0, offset + view->height, 0);
2141 if (!view->title)
2142 die("Failed to create title window");
2144 } else {
2145 wresize(view->win, view->height, view->width);
2146 mvwin(view->win, offset, 0);
2147 mvwin(view->title, offset + view->height, 0);
2148 }
2150 offset += view->height + 1;
2151 }
2152 }
2154 static void
2155 redraw_display(void)
2156 {
2157 struct view *view;
2158 int i;
2160 foreach_displayed_view (view, i) {
2161 redraw_view(view);
2162 update_view_title(view);
2163 }
2164 }
2166 static void
2167 update_display_cursor(struct view *view)
2168 {
2169 /* Move the cursor to the right-most column of the cursor line.
2170 *
2171 * XXX: This could turn out to be a bit expensive, but it ensures that
2172 * the cursor does not jump around. */
2173 if (view->lines) {
2174 wmove(view->win, view->lineno - view->offset, view->width - 1);
2175 wrefresh(view->win);
2176 }
2177 }
2179 /*
2180 * Navigation
2181 */
2183 /* Scrolling backend */
2184 static void
2185 do_scroll_view(struct view *view, int lines)
2186 {
2187 bool redraw_current_line = FALSE;
2189 /* The rendering expects the new offset. */
2190 view->offset += lines;
2192 assert(0 <= view->offset && view->offset < view->lines);
2193 assert(lines);
2195 /* Move current line into the view. */
2196 if (view->lineno < view->offset) {
2197 view->lineno = view->offset;
2198 redraw_current_line = TRUE;
2199 } else if (view->lineno >= view->offset + view->height) {
2200 view->lineno = view->offset + view->height - 1;
2201 redraw_current_line = TRUE;
2202 }
2204 assert(view->offset <= view->lineno && view->lineno < view->lines);
2206 /* Redraw the whole screen if scrolling is pointless. */
2207 if (view->height < ABS(lines)) {
2208 redraw_view(view);
2210 } else {
2211 int line = lines > 0 ? view->height - lines : 0;
2212 int end = line + ABS(lines);
2214 wscrl(view->win, lines);
2216 for (; line < end; line++) {
2217 if (!draw_view_line(view, line))
2218 break;
2219 }
2221 if (redraw_current_line)
2222 draw_view_line(view, view->lineno - view->offset);
2223 }
2225 redrawwin(view->win);
2226 wrefresh(view->win);
2227 report("");
2228 }
2230 /* Scroll frontend */
2231 static void
2232 scroll_view(struct view *view, enum request request)
2233 {
2234 int lines = 1;
2236 assert(view_is_displayed(view));
2238 switch (request) {
2239 case REQ_SCROLL_PAGE_DOWN:
2240 lines = view->height;
2241 case REQ_SCROLL_LINE_DOWN:
2242 if (view->offset + lines > view->lines)
2243 lines = view->lines - view->offset;
2245 if (lines == 0 || view->offset + view->height >= view->lines) {
2246 report("Cannot scroll beyond the last line");
2247 return;
2248 }
2249 break;
2251 case REQ_SCROLL_PAGE_UP:
2252 lines = view->height;
2253 case REQ_SCROLL_LINE_UP:
2254 if (lines > view->offset)
2255 lines = view->offset;
2257 if (lines == 0) {
2258 report("Cannot scroll beyond the first line");
2259 return;
2260 }
2262 lines = -lines;
2263 break;
2265 default:
2266 die("request %d not handled in switch", request);
2267 }
2269 do_scroll_view(view, lines);
2270 }
2272 /* Cursor moving */
2273 static void
2274 move_view(struct view *view, enum request request)
2275 {
2276 int scroll_steps = 0;
2277 int steps;
2279 switch (request) {
2280 case REQ_MOVE_FIRST_LINE:
2281 steps = -view->lineno;
2282 break;
2284 case REQ_MOVE_LAST_LINE:
2285 steps = view->lines - view->lineno - 1;
2286 break;
2288 case REQ_MOVE_PAGE_UP:
2289 steps = view->height > view->lineno
2290 ? -view->lineno : -view->height;
2291 break;
2293 case REQ_MOVE_PAGE_DOWN:
2294 steps = view->lineno + view->height >= view->lines
2295 ? view->lines - view->lineno - 1 : view->height;
2296 break;
2298 case REQ_MOVE_UP:
2299 steps = -1;
2300 break;
2302 case REQ_MOVE_DOWN:
2303 steps = 1;
2304 break;
2306 default:
2307 die("request %d not handled in switch", request);
2308 }
2310 if (steps <= 0 && view->lineno == 0) {
2311 report("Cannot move beyond the first line");
2312 return;
2314 } else if (steps >= 0 && view->lineno + 1 >= view->lines) {
2315 report("Cannot move beyond the last line");
2316 return;
2317 }
2319 /* Move the current line */
2320 view->lineno += steps;
2321 assert(0 <= view->lineno && view->lineno < view->lines);
2323 /* Check whether the view needs to be scrolled */
2324 if (view->lineno < view->offset ||
2325 view->lineno >= view->offset + view->height) {
2326 scroll_steps = steps;
2327 if (steps < 0 && -steps > view->offset) {
2328 scroll_steps = -view->offset;
2330 } else if (steps > 0) {
2331 if (view->lineno == view->lines - 1 &&
2332 view->lines > view->height) {
2333 scroll_steps = view->lines - view->offset - 1;
2334 if (scroll_steps >= view->height)
2335 scroll_steps -= view->height - 1;
2336 }
2337 }
2338 }
2340 if (!view_is_displayed(view)) {
2341 view->offset += scroll_steps;
2342 assert(0 <= view->offset && view->offset < view->lines);
2343 view->ops->select(view, &view->line[view->lineno]);
2344 return;
2345 }
2347 /* Repaint the old "current" line if we be scrolling */
2348 if (ABS(steps) < view->height)
2349 draw_view_line(view, view->lineno - steps - view->offset);
2351 if (scroll_steps) {
2352 do_scroll_view(view, scroll_steps);
2353 return;
2354 }
2356 /* Draw the current line */
2357 draw_view_line(view, view->lineno - view->offset);
2359 redrawwin(view->win);
2360 wrefresh(view->win);
2361 report("");
2362 }
2365 /*
2366 * Searching
2367 */
2369 static void search_view(struct view *view, enum request request);
2371 static bool
2372 find_next_line(struct view *view, unsigned long lineno, struct line *line)
2373 {
2374 assert(view_is_displayed(view));
2376 if (!view->ops->grep(view, line))
2377 return FALSE;
2379 if (lineno - view->offset >= view->height) {
2380 view->offset = lineno;
2381 view->lineno = lineno;
2382 redraw_view(view);
2384 } else {
2385 unsigned long old_lineno = view->lineno - view->offset;
2387 view->lineno = lineno;
2388 draw_view_line(view, old_lineno);
2390 draw_view_line(view, view->lineno - view->offset);
2391 redrawwin(view->win);
2392 wrefresh(view->win);
2393 }
2395 report("Line %ld matches '%s'", lineno + 1, view->grep);
2396 return TRUE;
2397 }
2399 static void
2400 find_next(struct view *view, enum request request)
2401 {
2402 unsigned long lineno = view->lineno;
2403 int direction;
2405 if (!*view->grep) {
2406 if (!*opt_search)
2407 report("No previous search");
2408 else
2409 search_view(view, request);
2410 return;
2411 }
2413 switch (request) {
2414 case REQ_SEARCH:
2415 case REQ_FIND_NEXT:
2416 direction = 1;
2417 break;
2419 case REQ_SEARCH_BACK:
2420 case REQ_FIND_PREV:
2421 direction = -1;
2422 break;
2424 default:
2425 return;
2426 }
2428 if (request == REQ_FIND_NEXT || request == REQ_FIND_PREV)
2429 lineno += direction;
2431 /* Note, lineno is unsigned long so will wrap around in which case it
2432 * will become bigger than view->lines. */
2433 for (; lineno < view->lines; lineno += direction) {
2434 struct line *line = &view->line[lineno];
2436 if (find_next_line(view, lineno, line))
2437 return;
2438 }
2440 report("No match found for '%s'", view->grep);
2441 }
2443 static void
2444 search_view(struct view *view, enum request request)
2445 {
2446 int regex_err;
2448 if (view->regex) {
2449 regfree(view->regex);
2450 *view->grep = 0;
2451 } else {
2452 view->regex = calloc(1, sizeof(*view->regex));
2453 if (!view->regex)
2454 return;
2455 }
2457 regex_err = regcomp(view->regex, opt_search, REG_EXTENDED);
2458 if (regex_err != 0) {
2459 char buf[SIZEOF_STR] = "unknown error";
2461 regerror(regex_err, view->regex, buf, sizeof(buf));
2462 report("Search failed: %s", buf);
2463 return;
2464 }
2466 string_copy(view->grep, opt_search);
2468 find_next(view, request);
2469 }
2471 /*
2472 * Incremental updating
2473 */
2475 static void
2476 reset_view(struct view *view)
2477 {
2478 int i;
2480 for (i = 0; i < view->lines; i++)
2481 free(view->line[i].data);
2482 free(view->line);
2484 view->line = NULL;
2485 view->offset = 0;
2486 view->lines = 0;
2487 view->lineno = 0;
2488 view->line_size = 0;
2489 view->line_alloc = 0;
2490 view->vid[0] = 0;
2491 }
2493 static void
2494 free_argv(const char *argv[])
2495 {
2496 int argc;
2498 for (argc = 0; argv[argc]; argc++)
2499 free((void *) argv[argc]);
2500 }
2502 static bool
2503 format_argv(const char *dst_argv[], const char *src_argv[], enum format_flags flags)
2504 {
2505 char buf[SIZEOF_STR];
2506 int argc;
2507 bool noreplace = flags == FORMAT_NONE;
2509 free_argv(dst_argv);
2511 for (argc = 0; src_argv[argc]; argc++) {
2512 const char *arg = src_argv[argc];
2513 size_t bufpos = 0;
2515 while (arg) {
2516 char *next = strstr(arg, "%(");
2517 int len = next - arg;
2518 const char *value;
2520 if (!next || noreplace) {
2521 if (flags == FORMAT_DASH && !strcmp(arg, "--"))
2522 noreplace = TRUE;
2523 len = strlen(arg);
2524 value = "";
2526 } else if (!prefixcmp(next, "%(directory)")) {
2527 value = opt_path;
2529 } else if (!prefixcmp(next, "%(file)")) {
2530 value = opt_file;
2532 } else if (!prefixcmp(next, "%(ref)")) {
2533 value = *opt_ref ? opt_ref : "HEAD";
2535 } else if (!prefixcmp(next, "%(head)")) {
2536 value = ref_head;
2538 } else if (!prefixcmp(next, "%(commit)")) {
2539 value = ref_commit;
2541 } else if (!prefixcmp(next, "%(blob)")) {
2542 value = ref_blob;
2544 } else {
2545 report("Unknown replacement: `%s`", next);
2546 return FALSE;
2547 }
2549 if (!string_format_from(buf, &bufpos, "%.*s%s", len, arg, value))
2550 return FALSE;
2552 arg = next && !noreplace ? strchr(next, ')') + 1 : NULL;
2553 }
2555 dst_argv[argc] = strdup(buf);
2556 if (!dst_argv[argc])
2557 break;
2558 }
2560 dst_argv[argc] = NULL;
2562 return src_argv[argc] == NULL;
2563 }
2565 static void
2566 end_update(struct view *view, bool force)
2567 {
2568 if (!view->pipe)
2569 return;
2570 while (!view->ops->read(view, NULL))
2571 if (!force)
2572 return;
2573 set_nonblocking_input(FALSE);
2574 if (force)
2575 kill_io(view->pipe);
2576 done_io(view->pipe);
2577 view->pipe = NULL;
2578 }
2580 static void
2581 setup_update(struct view *view, const char *vid)
2582 {
2583 set_nonblocking_input(TRUE);
2584 reset_view(view);
2585 string_copy_rev(view->vid, vid);
2586 view->pipe = &view->io;
2587 view->start_time = time(NULL);
2588 }
2590 static bool
2591 prepare_update(struct view *view, const char *argv[], const char *dir,
2592 enum format_flags flags)
2593 {
2594 if (view->pipe)
2595 end_update(view, TRUE);
2596 return init_io_rd(&view->io, argv, dir, flags);
2597 }
2599 static bool
2600 prepare_update_file(struct view *view, const char *name)
2601 {
2602 if (view->pipe)
2603 end_update(view, TRUE);
2604 return io_open(&view->io, name);
2605 }
2607 static bool
2608 begin_update(struct view *view, bool refresh)
2609 {
2610 if (refresh) {
2611 if (!start_io(&view->io))
2612 return FALSE;
2614 } else {
2615 if (view == VIEW(REQ_VIEW_TREE) && strcmp(view->vid, view->id))
2616 opt_path[0] = 0;
2618 if (!run_io_rd(&view->io, view->ops->argv, FORMAT_ALL))
2619 return FALSE;
2621 /* Put the current ref_* value to the view title ref
2622 * member. This is needed by the blob view. Most other
2623 * views sets it automatically after loading because the
2624 * first line is a commit line. */
2625 string_copy_rev(view->ref, view->id);
2626 }
2628 setup_update(view, view->id);
2630 return TRUE;
2631 }
2633 #define ITEM_CHUNK_SIZE 256
2634 static void *
2635 realloc_items(void *mem, size_t *size, size_t new_size, size_t item_size)
2636 {
2637 size_t num_chunks = *size / ITEM_CHUNK_SIZE;
2638 size_t num_chunks_new = (new_size + ITEM_CHUNK_SIZE - 1) / ITEM_CHUNK_SIZE;
2640 if (mem == NULL || num_chunks != num_chunks_new) {
2641 *size = num_chunks_new * ITEM_CHUNK_SIZE;
2642 mem = realloc(mem, *size * item_size);
2643 }
2645 return mem;
2646 }
2648 static struct line *
2649 realloc_lines(struct view *view, size_t line_size)
2650 {
2651 size_t alloc = view->line_alloc;
2652 struct line *tmp = realloc_items(view->line, &alloc, line_size,
2653 sizeof(*view->line));
2655 if (!tmp)
2656 return NULL;
2658 view->line = tmp;
2659 view->line_alloc = alloc;
2660 view->line_size = line_size;
2661 return view->line;
2662 }
2664 static bool
2665 update_view(struct view *view)
2666 {
2667 char out_buffer[BUFSIZ * 2];
2668 char *line;
2669 /* The number of lines to read. If too low it will cause too much
2670 * redrawing (and possible flickering), if too high responsiveness
2671 * will suffer. */
2672 unsigned long lines = view->height;
2673 int redraw_from = -1;
2675 if (!view->pipe)
2676 return TRUE;
2678 /* Only redraw if lines are visible. */
2679 if (view->offset + view->height >= view->lines)
2680 redraw_from = view->lines - view->offset;
2682 /* FIXME: This is probably not perfect for backgrounded views. */
2683 if (!realloc_lines(view, view->lines + lines))
2684 goto alloc_error;
2686 while ((line = io_get(view->pipe, '\n', TRUE))) {
2687 size_t linelen = strlen(line);
2689 if (opt_iconv != ICONV_NONE) {
2690 ICONV_CONST char *inbuf = line;
2691 size_t inlen = linelen;
2693 char *outbuf = out_buffer;
2694 size_t outlen = sizeof(out_buffer);
2696 size_t ret;
2698 ret = iconv(opt_iconv, &inbuf, &inlen, &outbuf, &outlen);
2699 if (ret != (size_t) -1) {
2700 line = out_buffer;
2701 linelen = strlen(out_buffer);
2702 }
2703 }
2705 if (!view->ops->read(view, line))
2706 goto alloc_error;
2708 if (lines-- == 1)
2709 break;
2710 }
2712 {
2713 int digits;
2715 lines = view->lines;
2716 for (digits = 0; lines; digits++)
2717 lines /= 10;
2719 /* Keep the displayed view in sync with line number scaling. */
2720 if (digits != view->digits) {
2721 view->digits = digits;
2722 redraw_from = 0;
2723 }
2724 }
2726 if (io_error(view->pipe)) {
2727 report("Failed to read: %s", io_strerror(view->pipe));
2728 end_update(view, TRUE);
2730 } else if (io_eof(view->pipe)) {
2731 report("");
2732 end_update(view, FALSE);
2733 }
2735 if (!view_is_displayed(view))
2736 return TRUE;
2738 if (view == VIEW(REQ_VIEW_TREE)) {
2739 /* Clear the view and redraw everything since the tree sorting
2740 * might have rearranged things. */
2741 redraw_view(view);
2743 } else if (redraw_from >= 0) {
2744 /* If this is an incremental update, redraw the previous line
2745 * since for commits some members could have changed when
2746 * loading the main view. */
2747 if (redraw_from > 0)
2748 redraw_from--;
2750 /* Since revision graph visualization requires knowledge
2751 * about the parent commit, it causes a further one-off
2752 * needed to be redrawn for incremental updates. */
2753 if (redraw_from > 0 && opt_rev_graph)
2754 redraw_from--;
2756 /* Incrementally draw avoids flickering. */
2757 redraw_view_from(view, redraw_from);
2758 }
2760 if (view == VIEW(REQ_VIEW_BLAME))
2761 redraw_view_dirty(view);
2763 /* Update the title _after_ the redraw so that if the redraw picks up a
2764 * commit reference in view->ref it'll be available here. */
2765 update_view_title(view);
2766 return TRUE;
2768 alloc_error:
2769 report("Allocation failure");
2770 end_update(view, TRUE);
2771 return FALSE;
2772 }
2774 static struct line *
2775 add_line_data(struct view *view, void *data, enum line_type type)
2776 {
2777 struct line *line = &view->line[view->lines++];
2779 memset(line, 0, sizeof(*line));
2780 line->type = type;
2781 line->data = data;
2783 return line;
2784 }
2786 static struct line *
2787 add_line_text(struct view *view, const char *text, enum line_type type)
2788 {
2789 char *data = text ? strdup(text) : NULL;
2791 return data ? add_line_data(view, data, type) : NULL;
2792 }
2795 /*
2796 * View opening
2797 */
2799 enum open_flags {
2800 OPEN_DEFAULT = 0, /* Use default view switching. */
2801 OPEN_SPLIT = 1, /* Split current view. */
2802 OPEN_BACKGROUNDED = 2, /* Backgrounded. */
2803 OPEN_RELOAD = 4, /* Reload view even if it is the current. */
2804 OPEN_NOMAXIMIZE = 8, /* Do not maximize the current view. */
2805 OPEN_REFRESH = 16, /* Refresh view using previous command. */
2806 OPEN_PREPARED = 32, /* Open already prepared command. */
2807 };
2809 static void
2810 open_view(struct view *prev, enum request request, enum open_flags flags)
2811 {
2812 bool backgrounded = !!(flags & OPEN_BACKGROUNDED);
2813 bool split = !!(flags & OPEN_SPLIT);
2814 bool reload = !!(flags & (OPEN_RELOAD | OPEN_REFRESH | OPEN_PREPARED));
2815 bool nomaximize = !!(flags & (OPEN_NOMAXIMIZE | OPEN_REFRESH));
2816 struct view *view = VIEW(request);
2817 int nviews = displayed_views();
2818 struct view *base_view = display[0];
2820 if (view == prev && nviews == 1 && !reload) {
2821 report("Already in %s view", view->name);
2822 return;
2823 }
2825 if (view->git_dir && !opt_git_dir[0]) {
2826 report("The %s view is disabled in pager view", view->name);
2827 return;
2828 }
2830 if (split) {
2831 display[1] = view;
2832 if (!backgrounded)
2833 current_view = 1;
2834 } else if (!nomaximize) {
2835 /* Maximize the current view. */
2836 memset(display, 0, sizeof(display));
2837 current_view = 0;
2838 display[current_view] = view;
2839 }
2841 /* Resize the view when switching between split- and full-screen,
2842 * or when switching between two different full-screen views. */
2843 if (nviews != displayed_views() ||
2844 (nviews == 1 && base_view != display[0]))
2845 resize_display();
2847 if (view->pipe)
2848 end_update(view, TRUE);
2850 if (view->ops->open) {
2851 if (!view->ops->open(view)) {
2852 report("Failed to load %s view", view->name);
2853 return;
2854 }
2856 } else if ((reload || strcmp(view->vid, view->id)) &&
2857 !begin_update(view, flags & (OPEN_REFRESH | OPEN_PREPARED))) {
2858 report("Failed to load %s view", view->name);
2859 return;
2860 }
2862 if (split && prev->lineno - prev->offset >= prev->height) {
2863 /* Take the title line into account. */
2864 int lines = prev->lineno - prev->offset - prev->height + 1;
2866 /* Scroll the view that was split if the current line is
2867 * outside the new limited view. */
2868 do_scroll_view(prev, lines);
2869 }
2871 if (prev && view != prev) {
2872 if (split && !backgrounded) {
2873 /* "Blur" the previous view. */
2874 update_view_title(prev);
2875 }
2877 view->parent = prev;
2878 }
2880 if (view->pipe && view->lines == 0) {
2881 /* Clear the old view and let the incremental updating refill
2882 * the screen. */
2883 werase(view->win);
2884 report("");
2885 } else if (view_is_displayed(view)) {
2886 redraw_view(view);
2887 report("");
2888 }
2890 /* If the view is backgrounded the above calls to report()
2891 * won't redraw the view title. */
2892 if (backgrounded)
2893 update_view_title(view);
2894 }
2896 static void
2897 open_external_viewer(const char *argv[], const char *dir)
2898 {
2899 def_prog_mode(); /* save current tty modes */
2900 endwin(); /* restore original tty modes */
2901 run_io_fg(argv, dir);
2902 fprintf(stderr, "Press Enter to continue");
2903 getc(opt_tty);
2904 reset_prog_mode();
2905 redraw_display();
2906 }
2908 static void
2909 open_mergetool(const char *file)
2910 {
2911 const char *mergetool_argv[] = { "git", "mergetool", file, NULL };
2913 open_external_viewer(mergetool_argv, NULL);
2914 }
2916 static void
2917 open_editor(bool from_root, const char *file)
2918 {
2919 const char *editor_argv[] = { "vi", file, NULL };
2920 const char *editor;
2922 editor = getenv("GIT_EDITOR");
2923 if (!editor && *opt_editor)
2924 editor = opt_editor;
2925 if (!editor)
2926 editor = getenv("VISUAL");
2927 if (!editor)
2928 editor = getenv("EDITOR");
2929 if (!editor)
2930 editor = "vi";
2932 editor_argv[0] = editor;
2933 open_external_viewer(editor_argv, from_root ? opt_cdup : NULL);
2934 }
2936 static void
2937 open_run_request(enum request request)
2938 {
2939 struct run_request *req = get_run_request(request);
2940 const char *argv[ARRAY_SIZE(req->argv)] = { NULL };
2942 if (!req) {
2943 report("Unknown run request");
2944 return;
2945 }
2947 if (format_argv(argv, req->argv, FORMAT_ALL))
2948 open_external_viewer(argv, NULL);
2949 free_argv(argv);
2950 }
2952 /*
2953 * User request switch noodle
2954 */
2956 static int
2957 view_driver(struct view *view, enum request request)
2958 {
2959 int i;
2961 if (request == REQ_NONE) {
2962 doupdate();
2963 return TRUE;
2964 }
2966 if (request > REQ_NONE) {
2967 open_run_request(request);
2968 /* FIXME: When all views can refresh always do this. */
2969 if (view == VIEW(REQ_VIEW_STATUS) ||
2970 view == VIEW(REQ_VIEW_MAIN) ||
2971 view == VIEW(REQ_VIEW_LOG) ||
2972 view == VIEW(REQ_VIEW_STAGE))
2973 request = REQ_REFRESH;
2974 else
2975 return TRUE;
2976 }
2978 if (view && view->lines) {
2979 request = view->ops->request(view, request, &view->line[view->lineno]);
2980 if (request == REQ_NONE)
2981 return TRUE;
2982 }
2984 switch (request) {
2985 case REQ_MOVE_UP:
2986 case REQ_MOVE_DOWN:
2987 case REQ_MOVE_PAGE_UP:
2988 case REQ_MOVE_PAGE_DOWN:
2989 case REQ_MOVE_FIRST_LINE:
2990 case REQ_MOVE_LAST_LINE:
2991 move_view(view, request);
2992 break;
2994 case REQ_SCROLL_LINE_DOWN:
2995 case REQ_SCROLL_LINE_UP:
2996 case REQ_SCROLL_PAGE_DOWN:
2997 case REQ_SCROLL_PAGE_UP:
2998 scroll_view(view, request);
2999 break;
3001 case REQ_VIEW_BLAME:
3002 if (!opt_file[0]) {
3003 report("No file chosen, press %s to open tree view",
3004 get_key(REQ_VIEW_TREE));
3005 break;
3006 }
3007 open_view(view, request, OPEN_DEFAULT);
3008 break;
3010 case REQ_VIEW_BLOB:
3011 if (!ref_blob[0]) {
3012 report("No file chosen, press %s to open tree view",
3013 get_key(REQ_VIEW_TREE));
3014 break;
3015 }
3016 open_view(view, request, OPEN_DEFAULT);
3017 break;
3019 case REQ_VIEW_PAGER:
3020 if (!VIEW(REQ_VIEW_PAGER)->pipe && !VIEW(REQ_VIEW_PAGER)->lines) {
3021 report("No pager content, press %s to run command from prompt",
3022 get_key(REQ_PROMPT));
3023 break;
3024 }
3025 open_view(view, request, OPEN_DEFAULT);
3026 break;
3028 case REQ_VIEW_STAGE:
3029 if (!VIEW(REQ_VIEW_STAGE)->lines) {
3030 report("No stage content, press %s to open the status view and choose file",
3031 get_key(REQ_VIEW_STATUS));
3032 break;
3033 }
3034 open_view(view, request, OPEN_DEFAULT);
3035 break;
3037 case REQ_VIEW_STATUS:
3038 if (opt_is_inside_work_tree == FALSE) {
3039 report("The status view requires a working tree");
3040 break;
3041 }
3042 open_view(view, request, OPEN_DEFAULT);
3043 break;
3045 case REQ_VIEW_MAIN:
3046 case REQ_VIEW_DIFF:
3047 case REQ_VIEW_LOG:
3048 case REQ_VIEW_TREE:
3049 case REQ_VIEW_HELP:
3050 open_view(view, request, OPEN_DEFAULT);
3051 break;
3053 case REQ_NEXT:
3054 case REQ_PREVIOUS:
3055 request = request == REQ_NEXT ? REQ_MOVE_DOWN : REQ_MOVE_UP;
3057 if ((view == VIEW(REQ_VIEW_DIFF) &&
3058 view->parent == VIEW(REQ_VIEW_MAIN)) ||
3059 (view == VIEW(REQ_VIEW_DIFF) &&
3060 view->parent == VIEW(REQ_VIEW_BLAME)) ||
3061 (view == VIEW(REQ_VIEW_STAGE) &&
3062 view->parent == VIEW(REQ_VIEW_STATUS)) ||
3063 (view == VIEW(REQ_VIEW_BLOB) &&
3064 view->parent == VIEW(REQ_VIEW_TREE))) {
3065 int line;
3067 view = view->parent;
3068 line = view->lineno;
3069 move_view(view, request);
3070 if (view_is_displayed(view))
3071 update_view_title(view);
3072 if (line != view->lineno)
3073 view->ops->request(view, REQ_ENTER,
3074 &view->line[view->lineno]);
3076 } else {
3077 move_view(view, request);
3078 }
3079 break;
3081 case REQ_VIEW_NEXT:
3082 {
3083 int nviews = displayed_views();
3084 int next_view = (current_view + 1) % nviews;
3086 if (next_view == current_view) {
3087 report("Only one view is displayed");
3088 break;
3089 }
3091 current_view = next_view;
3092 /* Blur out the title of the previous view. */
3093 update_view_title(view);
3094 report("");
3095 break;
3096 }
3097 case REQ_REFRESH:
3098 report("Refreshing is not yet supported for the %s view", view->name);
3099 break;
3101 case REQ_MAXIMIZE:
3102 if (displayed_views() == 2)
3103 open_view(view, VIEW_REQ(view), OPEN_DEFAULT);
3104 break;
3106 case REQ_TOGGLE_LINENO:
3107 opt_line_number = !opt_line_number;
3108 redraw_display();
3109 break;
3111 case REQ_TOGGLE_DATE:
3112 opt_date = !opt_date;
3113 redraw_display();
3114 break;
3116 case REQ_TOGGLE_AUTHOR:
3117 opt_author = !opt_author;
3118 redraw_display();
3119 break;
3121 case REQ_TOGGLE_REV_GRAPH:
3122 opt_rev_graph = !opt_rev_graph;
3123 redraw_display();
3124 break;
3126 case REQ_TOGGLE_REFS:
3127 opt_show_refs = !opt_show_refs;
3128 redraw_display();
3129 break;
3131 case REQ_SEARCH:
3132 case REQ_SEARCH_BACK:
3133 search_view(view, request);
3134 break;
3136 case REQ_FIND_NEXT:
3137 case REQ_FIND_PREV:
3138 find_next(view, request);
3139 break;
3141 case REQ_STOP_LOADING:
3142 for (i = 0; i < ARRAY_SIZE(views); i++) {
3143 view = &views[i];
3144 if (view->pipe)
3145 report("Stopped loading the %s view", view->name),
3146 end_update(view, TRUE);
3147 }
3148 break;
3150 case REQ_SHOW_VERSION:
3151 report("tig-%s (built %s)", TIG_VERSION, __DATE__);
3152 return TRUE;
3154 case REQ_SCREEN_RESIZE:
3155 resize_display();
3156 /* Fall-through */
3157 case REQ_SCREEN_REDRAW:
3158 redraw_display();
3159 break;
3161 case REQ_EDIT:
3162 report("Nothing to edit");
3163 break;
3165 case REQ_ENTER:
3166 report("Nothing to enter");
3167 break;
3169 case REQ_VIEW_CLOSE:
3170 /* XXX: Mark closed views by letting view->parent point to the
3171 * view itself. Parents to closed view should never be
3172 * followed. */
3173 if (view->parent &&
3174 view->parent->parent != view->parent) {
3175 memset(display, 0, sizeof(display));
3176 current_view = 0;
3177 display[current_view] = view->parent;
3178 view->parent = view;
3179 resize_display();
3180 redraw_display();
3181 report("");
3182 break;
3183 }
3184 /* Fall-through */
3185 case REQ_QUIT:
3186 return FALSE;
3188 default:
3189 report("Unknown key, press 'h' for help");
3190 return TRUE;
3191 }
3193 return TRUE;
3194 }
3197 /*
3198 * Pager backend
3199 */
3201 static bool
3202 pager_draw(struct view *view, struct line *line, unsigned int lineno)
3203 {
3204 char *text = line->data;
3206 if (opt_line_number && draw_lineno(view, lineno))
3207 return TRUE;
3209 draw_text(view, line->type, text, TRUE);
3210 return TRUE;
3211 }
3213 static bool
3214 add_describe_ref(char *buf, size_t *bufpos, const char *commit_id, const char *sep)
3215 {
3216 const char *describe_argv[] = { "git", "describe", commit_id, NULL };
3217 char refbuf[SIZEOF_STR];
3218 char *ref = NULL;
3220 if (run_io_buf(describe_argv, refbuf, sizeof(refbuf)))
3221 ref = chomp_string(refbuf);
3223 if (!ref || !*ref)
3224 return TRUE;
3226 /* This is the only fatal call, since it can "corrupt" the buffer. */
3227 if (!string_nformat(buf, SIZEOF_STR, bufpos, "%s%s", sep, ref))
3228 return FALSE;
3230 return TRUE;
3231 }
3233 static void
3234 add_pager_refs(struct view *view, struct line *line)
3235 {
3236 char buf[SIZEOF_STR];
3237 char *commit_id = (char *)line->data + STRING_SIZE("commit ");
3238 struct ref **refs;
3239 size_t bufpos = 0, refpos = 0;
3240 const char *sep = "Refs: ";
3241 bool is_tag = FALSE;
3243 assert(line->type == LINE_COMMIT);
3245 refs = get_refs(commit_id);
3246 if (!refs) {
3247 if (view == VIEW(REQ_VIEW_DIFF))
3248 goto try_add_describe_ref;
3249 return;
3250 }
3252 do {
3253 struct ref *ref = refs[refpos];
3254 const char *fmt = ref->tag ? "%s[%s]" :
3255 ref->remote ? "%s<%s>" : "%s%s";
3257 if (!string_format_from(buf, &bufpos, fmt, sep, ref->name))
3258 return;
3259 sep = ", ";
3260 if (ref->tag)
3261 is_tag = TRUE;
3262 } while (refs[refpos++]->next);
3264 if (!is_tag && view == VIEW(REQ_VIEW_DIFF)) {
3265 try_add_describe_ref:
3266 /* Add <tag>-g<commit_id> "fake" reference. */
3267 if (!add_describe_ref(buf, &bufpos, commit_id, sep))
3268 return;
3269 }
3271 if (bufpos == 0)
3272 return;
3274 if (!realloc_lines(view, view->line_size + 1))
3275 return;
3277 add_line_text(view, buf, LINE_PP_REFS);
3278 }
3280 static bool
3281 pager_read(struct view *view, char *data)
3282 {
3283 struct line *line;
3285 if (!data)
3286 return TRUE;
3288 line = add_line_text(view, data, get_line_type(data));
3289 if (!line)
3290 return FALSE;
3292 if (line->type == LINE_COMMIT &&
3293 (view == VIEW(REQ_VIEW_DIFF) ||
3294 view == VIEW(REQ_VIEW_LOG)))
3295 add_pager_refs(view, line);
3297 return TRUE;
3298 }
3300 static enum request
3301 pager_request(struct view *view, enum request request, struct line *line)
3302 {
3303 int split = 0;
3305 if (request != REQ_ENTER)
3306 return request;
3308 if (line->type == LINE_COMMIT &&
3309 (view == VIEW(REQ_VIEW_LOG) ||
3310 view == VIEW(REQ_VIEW_PAGER))) {
3311 open_view(view, REQ_VIEW_DIFF, OPEN_SPLIT);
3312 split = 1;
3313 }
3315 /* Always scroll the view even if it was split. That way
3316 * you can use Enter to scroll through the log view and
3317 * split open each commit diff. */
3318 scroll_view(view, REQ_SCROLL_LINE_DOWN);
3320 /* FIXME: A minor workaround. Scrolling the view will call report("")
3321 * but if we are scrolling a non-current view this won't properly
3322 * update the view title. */
3323 if (split)
3324 update_view_title(view);
3326 return REQ_NONE;
3327 }
3329 static bool
3330 pager_grep(struct view *view, struct line *line)
3331 {
3332 regmatch_t pmatch;
3333 char *text = line->data;
3335 if (!*text)
3336 return FALSE;
3338 if (regexec(view->regex, text, 1, &pmatch, 0) == REG_NOMATCH)
3339 return FALSE;
3341 return TRUE;
3342 }
3344 static void
3345 pager_select(struct view *view, struct line *line)
3346 {
3347 if (line->type == LINE_COMMIT) {
3348 char *text = (char *)line->data + STRING_SIZE("commit ");
3350 if (view != VIEW(REQ_VIEW_PAGER))
3351 string_copy_rev(view->ref, text);
3352 string_copy_rev(ref_commit, text);
3353 }
3354 }
3356 static struct view_ops pager_ops = {
3357 "line",
3358 NULL,
3359 NULL,
3360 pager_read,
3361 pager_draw,
3362 pager_request,
3363 pager_grep,
3364 pager_select,
3365 };
3367 static const char *log_argv[SIZEOF_ARG] = {
3368 "git", "log", "--no-color", "--cc", "--stat", "-n100", "%(head)", NULL
3369 };
3371 static enum request
3372 log_request(struct view *view, enum request request, struct line *line)
3373 {
3374 switch (request) {
3375 case REQ_REFRESH:
3376 load_refs();
3377 open_view(view, REQ_VIEW_LOG, OPEN_REFRESH);
3378 return REQ_NONE;
3379 default:
3380 return pager_request(view, request, line);
3381 }
3382 }
3384 static struct view_ops log_ops = {
3385 "line",
3386 log_argv,
3387 NULL,
3388 pager_read,
3389 pager_draw,
3390 log_request,
3391 pager_grep,
3392 pager_select,
3393 };
3395 static const char *diff_argv[SIZEOF_ARG] = {
3396 "git", "show", "--pretty=fuller", "--no-color", "--root",
3397 "--patch-with-stat", "--find-copies-harder", "-C", "%(commit)", NULL
3398 };
3400 static struct view_ops diff_ops = {
3401 "line",
3402 diff_argv,
3403 NULL,
3404 pager_read,
3405 pager_draw,
3406 pager_request,
3407 pager_grep,
3408 pager_select,
3409 };
3411 /*
3412 * Help backend
3413 */
3415 static bool
3416 help_open(struct view *view)
3417 {
3418 char buf[BUFSIZ];
3419 int lines = ARRAY_SIZE(req_info) + 2;
3420 int i;
3422 if (view->lines > 0)
3423 return TRUE;
3425 for (i = 0; i < ARRAY_SIZE(req_info); i++)
3426 if (!req_info[i].request)
3427 lines++;
3429 lines += run_requests + 1;
3431 view->line = calloc(lines, sizeof(*view->line));
3432 if (!view->line)
3433 return FALSE;
3435 add_line_text(view, "Quick reference for tig keybindings:", LINE_DEFAULT);
3437 for (i = 0; i < ARRAY_SIZE(req_info); i++) {
3438 const char *key;
3440 if (req_info[i].request == REQ_NONE)
3441 continue;
3443 if (!req_info[i].request) {
3444 add_line_text(view, "", LINE_DEFAULT);
3445 add_line_text(view, req_info[i].help, LINE_DEFAULT);
3446 continue;
3447 }
3449 key = get_key(req_info[i].request);
3450 if (!*key)
3451 key = "(no key defined)";
3453 if (!string_format(buf, " %-25s %s", key, req_info[i].help))
3454 continue;
3456 add_line_text(view, buf, LINE_DEFAULT);
3457 }
3459 if (run_requests) {
3460 add_line_text(view, "", LINE_DEFAULT);
3461 add_line_text(view, "External commands:", LINE_DEFAULT);
3462 }
3464 for (i = 0; i < run_requests; i++) {
3465 struct run_request *req = get_run_request(REQ_NONE + i + 1);
3466 const char *key;
3467 char cmd[SIZEOF_STR];
3468 size_t bufpos;
3469 int argc;
3471 if (!req)
3472 continue;
3474 key = get_key_name(req->key);
3475 if (!*key)
3476 key = "(no key defined)";
3478 for (bufpos = 0, argc = 0; req->argv[argc]; argc++)
3479 if (!string_format_from(cmd, &bufpos, "%s%s",
3480 argc ? " " : "", req->argv[argc]))
3481 return REQ_NONE;
3483 if (!string_format(buf, " %-10s %-14s `%s`",
3484 keymap_table[req->keymap].name, key, cmd))
3485 continue;
3487 add_line_text(view, buf, LINE_DEFAULT);
3488 }
3490 return TRUE;
3491 }
3493 static struct view_ops help_ops = {
3494 "line",
3495 NULL,
3496 help_open,
3497 NULL,
3498 pager_draw,
3499 pager_request,
3500 pager_grep,
3501 pager_select,
3502 };
3505 /*
3506 * Tree backend
3507 */
3509 struct tree_stack_entry {
3510 struct tree_stack_entry *prev; /* Entry below this in the stack */
3511 unsigned long lineno; /* Line number to restore */
3512 char *name; /* Position of name in opt_path */
3513 };
3515 /* The top of the path stack. */
3516 static struct tree_stack_entry *tree_stack = NULL;
3517 unsigned long tree_lineno = 0;
3519 static void
3520 pop_tree_stack_entry(void)
3521 {
3522 struct tree_stack_entry *entry = tree_stack;
3524 tree_lineno = entry->lineno;
3525 entry->name[0] = 0;
3526 tree_stack = entry->prev;
3527 free(entry);
3528 }
3530 static void
3531 push_tree_stack_entry(const char *name, unsigned long lineno)
3532 {
3533 struct tree_stack_entry *entry = calloc(1, sizeof(*entry));
3534 size_t pathlen = strlen(opt_path);
3536 if (!entry)
3537 return;
3539 entry->prev = tree_stack;
3540 entry->name = opt_path + pathlen;
3541 tree_stack = entry;
3543 if (!string_format_from(opt_path, &pathlen, "%s/", name)) {
3544 pop_tree_stack_entry();
3545 return;
3546 }
3548 /* Move the current line to the first tree entry. */
3549 tree_lineno = 1;
3550 entry->lineno = lineno;
3551 }
3553 /* Parse output from git-ls-tree(1):
3554 *
3555 * 100644 blob fb0e31ea6cc679b7379631188190e975f5789c26 Makefile
3556 * 100644 blob 5304ca4260aaddaee6498f9630e7d471b8591ea6 README
3557 * 100644 blob f931e1d229c3e185caad4449bf5b66ed72462657 tig.c
3558 * 100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38 web.conf
3559 */
3561 #define SIZEOF_TREE_ATTR \
3562 STRING_SIZE("100644 blob ed09fe897f3c7c9af90bcf80cae92558ea88ae38\t")
3564 #define TREE_UP_FORMAT "040000 tree %s\t.."
3566 static int
3567 tree_compare_entry(enum line_type type1, const char *name1,
3568 enum line_type type2, const char *name2)
3569 {
3570 if (type1 != type2) {
3571 if (type1 == LINE_TREE_DIR)
3572 return -1;
3573 return 1;
3574 }
3576 return strcmp(name1, name2);
3577 }
3579 static const char *
3580 tree_path(struct line *line)
3581 {
3582 const char *path = line->data;
3584 return path + SIZEOF_TREE_ATTR;
3585 }
3587 static bool
3588 tree_read(struct view *view, char *text)
3589 {
3590 size_t textlen = text ? strlen(text) : 0;
3591 char buf[SIZEOF_STR];
3592 unsigned long pos;
3593 enum line_type type;
3594 bool first_read = view->lines == 0;
3596 if (!text)
3597 return TRUE;
3598 if (textlen <= SIZEOF_TREE_ATTR)
3599 return FALSE;
3601 type = text[STRING_SIZE("100644 ")] == 't'
3602 ? LINE_TREE_DIR : LINE_TREE_FILE;
3604 if (first_read) {
3605 /* Add path info line */
3606 if (!string_format(buf, "Directory path /%s", opt_path) ||
3607 !realloc_lines(view, view->line_size + 1) ||
3608 !add_line_text(view, buf, LINE_DEFAULT))
3609 return FALSE;
3611 /* Insert "link" to parent directory. */
3612 if (*opt_path) {
3613 if (!string_format(buf, TREE_UP_FORMAT, view->ref) ||
3614 !realloc_lines(view, view->line_size + 1) ||
3615 !add_line_text(view, buf, LINE_TREE_DIR))
3616 return FALSE;
3617 }
3618 }
3620 /* Strip the path part ... */
3621 if (*opt_path) {
3622 size_t pathlen = textlen - SIZEOF_TREE_ATTR;
3623 size_t striplen = strlen(opt_path);
3624 char *path = text + SIZEOF_TREE_ATTR;
3626 if (pathlen > striplen)
3627 memmove(path, path + striplen,
3628 pathlen - striplen + 1);
3629 }
3631 /* Skip "Directory ..." and ".." line. */
3632 for (pos = 1 + !!*opt_path; pos < view->lines; pos++) {
3633 struct line *line = &view->line[pos];
3634 const char *path1 = tree_path(line);
3635 char *path2 = text + SIZEOF_TREE_ATTR;
3636 int cmp = tree_compare_entry(line->type, path1, type, path2);
3638 if (cmp <= 0)
3639 continue;
3641 text = strdup(text);
3642 if (!text)
3643 return FALSE;
3645 if (view->lines > pos)
3646 memmove(&view->line[pos + 1], &view->line[pos],
3647 (view->lines - pos) * sizeof(*line));
3649 line = &view->line[pos];
3650 line->data = text;
3651 line->type = type;
3652 view->lines++;
3653 return TRUE;
3654 }
3656 if (!add_line_text(view, text, type))
3657 return FALSE;
3659 if (tree_lineno > view->lineno) {
3660 view->lineno = tree_lineno;
3661 tree_lineno = 0;
3662 }
3664 return TRUE;
3665 }
3667 static enum request
3668 tree_request(struct view *view, enum request request, struct line *line)
3669 {
3670 enum open_flags flags;
3672 switch (request) {
3673 case REQ_VIEW_BLAME:
3674 if (line->type != LINE_TREE_FILE) {
3675 report("Blame only supported for files");
3676 return REQ_NONE;
3677 }
3679 string_copy(opt_ref, view->vid);
3680 return request;
3682 case REQ_EDIT:
3683 if (line->type != LINE_TREE_FILE) {
3684 report("Edit only supported for files");
3685 } else if (!is_head_commit(view->vid)) {
3686 report("Edit only supported for files in the current work tree");
3687 } else {
3688 open_editor(TRUE, opt_file);
3689 }
3690 return REQ_NONE;
3692 case REQ_TREE_PARENT:
3693 if (!*opt_path) {
3694 /* quit view if at top of tree */
3695 return REQ_VIEW_CLOSE;
3696 }
3697 /* fake 'cd ..' */
3698 line = &view->line[1];
3699 break;
3701 case REQ_ENTER:
3702 break;
3704 default:
3705 return request;
3706 }
3708 /* Cleanup the stack if the tree view is at a different tree. */
3709 while (!*opt_path && tree_stack)
3710 pop_tree_stack_entry();
3712 switch (line->type) {
3713 case LINE_TREE_DIR:
3714 /* Depending on whether it is a subdir or parent (updir?) link
3715 * mangle the path buffer. */
3716 if (line == &view->line[1] && *opt_path) {
3717 pop_tree_stack_entry();
3719 } else {
3720 const char *basename = tree_path(line);
3722 push_tree_stack_entry(basename, view->lineno);
3723 }
3725 /* Trees and subtrees share the same ID, so they are not not
3726 * unique like blobs. */
3727 flags = OPEN_RELOAD;
3728 request = REQ_VIEW_TREE;
3729 break;
3731 case LINE_TREE_FILE:
3732 flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
3733 request = REQ_VIEW_BLOB;
3734 break;
3736 default:
3737 return TRUE;
3738 }
3740 open_view(view, request, flags);
3741 if (request == REQ_VIEW_TREE) {
3742 view->lineno = tree_lineno;
3743 }
3745 return REQ_NONE;
3746 }
3748 static void
3749 tree_select(struct view *view, struct line *line)
3750 {
3751 char *text = (char *)line->data + STRING_SIZE("100644 blob ");
3753 if (line->type == LINE_TREE_FILE) {
3754 string_copy_rev(ref_blob, text);
3755 string_format(opt_file, "%s%s", opt_path, tree_path(line));
3757 } else if (line->type != LINE_TREE_DIR) {
3758 return;
3759 }
3761 string_copy_rev(view->ref, text);
3762 }
3764 static const char *tree_argv[SIZEOF_ARG] = {
3765 "git", "ls-tree", "%(commit)", "%(directory)", NULL
3766 };
3768 static struct view_ops tree_ops = {
3769 "file",
3770 tree_argv,
3771 NULL,
3772 tree_read,
3773 pager_draw,
3774 tree_request,
3775 pager_grep,
3776 tree_select,
3777 };
3779 static bool
3780 blob_read(struct view *view, char *line)
3781 {
3782 if (!line)
3783 return TRUE;
3784 return add_line_text(view, line, LINE_DEFAULT) != NULL;
3785 }
3787 static const char *blob_argv[SIZEOF_ARG] = {
3788 "git", "cat-file", "blob", "%(blob)", NULL
3789 };
3791 static struct view_ops blob_ops = {
3792 "line",
3793 blob_argv,
3794 NULL,
3795 blob_read,
3796 pager_draw,
3797 pager_request,
3798 pager_grep,
3799 pager_select,
3800 };
3802 /*
3803 * Blame backend
3804 *
3805 * Loading the blame view is a two phase job:
3806 *
3807 * 1. File content is read either using opt_file from the
3808 * filesystem or using git-cat-file.
3809 * 2. Then blame information is incrementally added by
3810 * reading output from git-blame.
3811 */
3813 static const char *blame_head_argv[] = {
3814 "git", "blame", "--incremental", "--", "%(file)", NULL
3815 };
3817 static const char *blame_ref_argv[] = {
3818 "git", "blame", "--incremental", "%(ref)", "--", "%(file)", NULL
3819 };
3821 static const char *blame_cat_file_argv[] = {
3822 "git", "cat-file", "blob", "%(ref):%(file)", NULL
3823 };
3825 struct blame_commit {
3826 char id[SIZEOF_REV]; /* SHA1 ID. */
3827 char title[128]; /* First line of the commit message. */
3828 char author[75]; /* Author of the commit. */
3829 struct tm time; /* Date from the author ident. */
3830 char filename[128]; /* Name of file. */
3831 };
3833 struct blame {
3834 struct blame_commit *commit;
3835 char text[1];
3836 };
3838 static bool
3839 blame_open(struct view *view)
3840 {
3841 if (*opt_ref || !io_open(&view->io, opt_file)) {
3842 if (!run_io_rd(&view->io, blame_cat_file_argv, FORMAT_ALL))
3843 return FALSE;
3844 }
3846 setup_update(view, opt_file);
3847 string_format(view->ref, "%s ...", opt_file);
3849 return TRUE;
3850 }
3852 static struct blame_commit *
3853 get_blame_commit(struct view *view, const char *id)
3854 {
3855 size_t i;
3857 for (i = 0; i < view->lines; i++) {
3858 struct blame *blame = view->line[i].data;
3860 if (!blame->commit)
3861 continue;
3863 if (!strncmp(blame->commit->id, id, SIZEOF_REV - 1))
3864 return blame->commit;
3865 }
3867 {
3868 struct blame_commit *commit = calloc(1, sizeof(*commit));
3870 if (commit)
3871 string_ncopy(commit->id, id, SIZEOF_REV);
3872 return commit;
3873 }
3874 }
3876 static bool
3877 parse_number(const char **posref, size_t *number, size_t min, size_t max)
3878 {
3879 const char *pos = *posref;
3881 *posref = NULL;
3882 pos = strchr(pos + 1, ' ');
3883 if (!pos || !isdigit(pos[1]))
3884 return FALSE;
3885 *number = atoi(pos + 1);
3886 if (*number < min || *number > max)
3887 return FALSE;
3889 *posref = pos;
3890 return TRUE;
3891 }
3893 static struct blame_commit *
3894 parse_blame_commit(struct view *view, const char *text, int *blamed)
3895 {
3896 struct blame_commit *commit;
3897 struct blame *blame;
3898 const char *pos = text + SIZEOF_REV - 1;
3899 size_t lineno;
3900 size_t group;
3902 if (strlen(text) <= SIZEOF_REV || *pos != ' ')
3903 return NULL;
3905 if (!parse_number(&pos, &lineno, 1, view->lines) ||
3906 !parse_number(&pos, &group, 1, view->lines - lineno + 1))
3907 return NULL;
3909 commit = get_blame_commit(view, text);
3910 if (!commit)
3911 return NULL;
3913 *blamed += group;
3914 while (group--) {
3915 struct line *line = &view->line[lineno + group - 1];
3917 blame = line->data;
3918 blame->commit = commit;
3919 line->dirty = 1;
3920 }
3922 return commit;
3923 }
3925 static bool
3926 blame_read_file(struct view *view, const char *line, bool *read_file)
3927 {
3928 if (!line) {
3929 const char **argv = *opt_ref ? blame_ref_argv : blame_head_argv;
3930 struct io io = {};
3932 if (view->lines == 0 && !view->parent)
3933 die("No blame exist for %s", view->vid);
3935 if (view->lines == 0 || !run_io_rd(&io, argv, FORMAT_ALL)) {
3936 report("Failed to load blame data");
3937 return TRUE;
3938 }
3940 done_io(view->pipe);
3941 view->io = io;
3942 *read_file = FALSE;
3943 return FALSE;
3945 } else {
3946 size_t linelen = strlen(line);
3947 struct blame *blame = malloc(sizeof(*blame) + linelen);
3949 blame->commit = NULL;
3950 strncpy(blame->text, line, linelen);
3951 blame->text[linelen] = 0;
3952 return add_line_data(view, blame, LINE_BLAME_ID) != NULL;
3953 }
3954 }
3956 static bool
3957 match_blame_header(const char *name, char **line)
3958 {
3959 size_t namelen = strlen(name);
3960 bool matched = !strncmp(name, *line, namelen);
3962 if (matched)
3963 *line += namelen;
3965 return matched;
3966 }
3968 static bool
3969 blame_read(struct view *view, char *line)
3970 {
3971 static struct blame_commit *commit = NULL;
3972 static int blamed = 0;
3973 static time_t author_time;
3974 static bool read_file = TRUE;
3976 if (read_file)
3977 return blame_read_file(view, line, &read_file);
3979 if (!line) {
3980 /* Reset all! */
3981 commit = NULL;
3982 blamed = 0;
3983 read_file = TRUE;
3984 string_format(view->ref, "%s", view->vid);
3985 if (view_is_displayed(view)) {
3986 update_view_title(view);
3987 redraw_view_from(view, 0);
3988 }
3989 return TRUE;
3990 }
3992 if (!commit) {
3993 commit = parse_blame_commit(view, line, &blamed);
3994 string_format(view->ref, "%s %2d%%", view->vid,
3995 blamed * 100 / view->lines);
3997 } else if (match_blame_header("author ", &line)) {
3998 string_ncopy(commit->author, line, strlen(line));
4000 } else if (match_blame_header("author-time ", &line)) {
4001 author_time = (time_t) atol(line);
4003 } else if (match_blame_header("author-tz ", &line)) {
4004 long tz;
4006 tz = ('0' - line[1]) * 60 * 60 * 10;
4007 tz += ('0' - line[2]) * 60 * 60;
4008 tz += ('0' - line[3]) * 60;
4009 tz += ('0' - line[4]) * 60;
4011 if (line[0] == '-')
4012 tz = -tz;
4014 author_time -= tz;
4015 gmtime_r(&author_time, &commit->time);
4017 } else if (match_blame_header("summary ", &line)) {
4018 string_ncopy(commit->title, line, strlen(line));
4020 } else if (match_blame_header("filename ", &line)) {
4021 string_ncopy(commit->filename, line, strlen(line));
4022 commit = NULL;
4023 }
4025 return TRUE;
4026 }
4028 static bool
4029 blame_draw(struct view *view, struct line *line, unsigned int lineno)
4030 {
4031 struct blame *blame = line->data;
4032 struct tm *time = NULL;
4033 const char *id = NULL, *author = NULL;
4035 if (blame->commit && *blame->commit->filename) {
4036 id = blame->commit->id;
4037 author = blame->commit->author;
4038 time = &blame->commit->time;
4039 }
4041 if (opt_date && draw_date(view, time))
4042 return TRUE;
4044 if (opt_author &&
4045 draw_field(view, LINE_MAIN_AUTHOR, author, opt_author_cols, TRUE))
4046 return TRUE;
4048 if (draw_field(view, LINE_BLAME_ID, id, ID_COLS, FALSE))
4049 return TRUE;
4051 if (draw_lineno(view, lineno))
4052 return TRUE;
4054 draw_text(view, LINE_DEFAULT, blame->text, TRUE);
4055 return TRUE;
4056 }
4058 static enum request
4059 blame_request(struct view *view, enum request request, struct line *line)
4060 {
4061 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
4062 struct blame *blame = line->data;
4064 switch (request) {
4065 case REQ_VIEW_BLAME:
4066 if (!blame->commit || !strcmp(blame->commit->id, NULL_ID)) {
4067 report("Commit ID unknown");
4068 break;
4069 }
4070 string_copy(opt_ref, blame->commit->id);
4071 open_view(view, REQ_VIEW_BLAME, OPEN_REFRESH);
4072 return request;
4074 case REQ_ENTER:
4075 if (!blame->commit) {
4076 report("No commit loaded yet");
4077 break;
4078 }
4080 if (view_is_displayed(VIEW(REQ_VIEW_DIFF)) &&
4081 !strcmp(blame->commit->id, VIEW(REQ_VIEW_DIFF)->ref))
4082 break;
4084 if (!strcmp(blame->commit->id, NULL_ID)) {
4085 struct view *diff = VIEW(REQ_VIEW_DIFF);
4086 const char *diff_index_argv[] = {
4087 "git", "diff-index", "--root", "--cached",
4088 "--patch-with-stat", "-C", "-M",
4089 "HEAD", "--", view->vid, NULL
4090 };
4092 if (!prepare_update(diff, diff_index_argv, NULL, FORMAT_DASH)) {
4093 report("Failed to allocate diff command");
4094 break;
4095 }
4096 flags |= OPEN_PREPARED;
4097 }
4099 open_view(view, REQ_VIEW_DIFF, flags);
4100 break;
4102 default:
4103 return request;
4104 }
4106 return REQ_NONE;
4107 }
4109 static bool
4110 blame_grep(struct view *view, struct line *line)
4111 {
4112 struct blame *blame = line->data;
4113 struct blame_commit *commit = blame->commit;
4114 regmatch_t pmatch;
4116 #define MATCH(text, on) \
4117 (on && *text && regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
4119 if (commit) {
4120 char buf[DATE_COLS + 1];
4122 if (MATCH(commit->title, 1) ||
4123 MATCH(commit->author, opt_author) ||
4124 MATCH(commit->id, opt_date))
4125 return TRUE;
4127 if (strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time) &&
4128 MATCH(buf, 1))
4129 return TRUE;
4130 }
4132 return MATCH(blame->text, 1);
4134 #undef MATCH
4135 }
4137 static void
4138 blame_select(struct view *view, struct line *line)
4139 {
4140 struct blame *blame = line->data;
4141 struct blame_commit *commit = blame->commit;
4143 if (!commit)
4144 return;
4146 if (!strcmp(commit->id, NULL_ID))
4147 string_ncopy(ref_commit, "HEAD", 4);
4148 else
4149 string_copy_rev(ref_commit, commit->id);
4150 }
4152 static struct view_ops blame_ops = {
4153 "line",
4154 NULL,
4155 blame_open,
4156 blame_read,
4157 blame_draw,
4158 blame_request,
4159 blame_grep,
4160 blame_select,
4161 };
4163 /*
4164 * Status backend
4165 */
4167 struct status {
4168 char status;
4169 struct {
4170 mode_t mode;
4171 char rev[SIZEOF_REV];
4172 char name[SIZEOF_STR];
4173 } old;
4174 struct {
4175 mode_t mode;
4176 char rev[SIZEOF_REV];
4177 char name[SIZEOF_STR];
4178 } new;
4179 };
4181 static char status_onbranch[SIZEOF_STR];
4182 static struct status stage_status;
4183 static enum line_type stage_line_type;
4184 static size_t stage_chunks;
4185 static int *stage_chunk;
4187 /* This should work even for the "On branch" line. */
4188 static inline bool
4189 status_has_none(struct view *view, struct line *line)
4190 {
4191 return line < view->line + view->lines && !line[1].data;
4192 }
4194 /* Get fields from the diff line:
4195 * :100644 100644 06a5d6ae9eca55be2e0e585a152e6b1336f2b20e 0000000000000000000000000000000000000000 M
4196 */
4197 static inline bool
4198 status_get_diff(struct status *file, const char *buf, size_t bufsize)
4199 {
4200 const char *old_mode = buf + 1;
4201 const char *new_mode = buf + 8;
4202 const char *old_rev = buf + 15;
4203 const char *new_rev = buf + 56;
4204 const char *status = buf + 97;
4206 if (bufsize < 98 ||
4207 old_mode[-1] != ':' ||
4208 new_mode[-1] != ' ' ||
4209 old_rev[-1] != ' ' ||
4210 new_rev[-1] != ' ' ||
4211 status[-1] != ' ')
4212 return FALSE;
4214 file->status = *status;
4216 string_copy_rev(file->old.rev, old_rev);
4217 string_copy_rev(file->new.rev, new_rev);
4219 file->old.mode = strtoul(old_mode, NULL, 8);
4220 file->new.mode = strtoul(new_mode, NULL, 8);
4222 file->old.name[0] = file->new.name[0] = 0;
4224 return TRUE;
4225 }
4227 static bool
4228 status_run(struct view *view, const char *argv[], char status, enum line_type type)
4229 {
4230 struct status *file = NULL;
4231 struct status *unmerged = NULL;
4232 char *buf;
4233 struct io io = {};
4235 if (!run_io(&io, argv, NULL, IO_RD))
4236 return FALSE;
4238 add_line_data(view, NULL, type);
4240 while ((buf = io_get(&io, 0, TRUE))) {
4241 if (!file) {
4242 if (!realloc_lines(view, view->line_size + 1))
4243 goto error_out;
4245 file = calloc(1, sizeof(*file));
4246 if (!file)
4247 goto error_out;
4249 add_line_data(view, file, type);
4250 }
4252 /* Parse diff info part. */
4253 if (status) {
4254 file->status = status;
4255 if (status == 'A')
4256 string_copy(file->old.rev, NULL_ID);
4258 } else if (!file->status) {
4259 if (!status_get_diff(file, buf, strlen(buf)))
4260 goto error_out;
4262 buf = io_get(&io, 0, TRUE);
4263 if (!buf)
4264 break;
4266 /* Collapse all 'M'odified entries that
4267 * follow a associated 'U'nmerged entry.
4268 */
4269 if (file->status == 'U') {
4270 unmerged = file;
4272 } else if (unmerged) {
4273 int collapse = !strcmp(buf, unmerged->new.name);
4275 unmerged = NULL;
4276 if (collapse) {
4277 free(file);
4278 view->lines--;
4279 continue;
4280 }
4281 }
4282 }
4284 /* Grab the old name for rename/copy. */
4285 if (!*file->old.name &&
4286 (file->status == 'R' || file->status == 'C')) {
4287 string_ncopy(file->old.name, buf, strlen(buf));
4289 buf = io_get(&io, 0, TRUE);
4290 if (!buf)
4291 break;
4292 }
4294 /* git-ls-files just delivers a NUL separated
4295 * list of file names similar to the second half
4296 * of the git-diff-* output. */
4297 string_ncopy(file->new.name, buf, strlen(buf));
4298 if (!*file->old.name)
4299 string_copy(file->old.name, file->new.name);
4300 file = NULL;
4301 }
4303 if (io_error(&io)) {
4304 error_out:
4305 done_io(&io);
4306 return FALSE;
4307 }
4309 if (!view->line[view->lines - 1].data)
4310 add_line_data(view, NULL, LINE_STAT_NONE);
4312 done_io(&io);
4313 return TRUE;
4314 }
4316 /* Don't show unmerged entries in the staged section. */
4317 static const char *status_diff_index_argv[] = {
4318 "git", "diff-index", "-z", "--diff-filter=ACDMRTXB",
4319 "--cached", "-M", "HEAD", NULL
4320 };
4322 static const char *status_diff_files_argv[] = {
4323 "git", "diff-files", "-z", NULL
4324 };
4326 static const char *status_list_other_argv[] = {
4327 "git", "ls-files", "-z", "--others", "--exclude-standard", NULL
4328 };
4330 static const char *status_list_no_head_argv[] = {
4331 "git", "ls-files", "-z", "--cached", "--exclude-standard", NULL
4332 };
4334 static const char *update_index_argv[] = {
4335 "git", "update-index", "-q", "--unmerged", "--refresh", NULL
4336 };
4338 /* First parse staged info using git-diff-index(1), then parse unstaged
4339 * info using git-diff-files(1), and finally untracked files using
4340 * git-ls-files(1). */
4341 static bool
4342 status_open(struct view *view)
4343 {
4344 unsigned long prev_lineno = view->lineno;
4346 reset_view(view);
4348 if (!realloc_lines(view, view->line_size + 7))
4349 return FALSE;
4351 add_line_data(view, NULL, LINE_STAT_HEAD);
4352 if (is_initial_commit())
4353 string_copy(status_onbranch, "Initial commit");
4354 else if (!*opt_head)
4355 string_copy(status_onbranch, "Not currently on any branch");
4356 else if (!string_format(status_onbranch, "On branch %s", opt_head))
4357 return FALSE;
4359 run_io_bg(update_index_argv);
4361 if (is_initial_commit()) {
4362 if (!status_run(view, status_list_no_head_argv, 'A', LINE_STAT_STAGED))
4363 return FALSE;
4364 } else if (!status_run(view, status_diff_index_argv, 0, LINE_STAT_STAGED)) {
4365 return FALSE;
4366 }
4368 if (!status_run(view, status_diff_files_argv, 0, LINE_STAT_UNSTAGED) ||
4369 !status_run(view, status_list_other_argv, '?', LINE_STAT_UNTRACKED))
4370 return FALSE;
4372 /* If all went well restore the previous line number to stay in
4373 * the context or select a line with something that can be
4374 * updated. */
4375 if (prev_lineno >= view->lines)
4376 prev_lineno = view->lines - 1;
4377 while (prev_lineno < view->lines && !view->line[prev_lineno].data)
4378 prev_lineno++;
4379 while (prev_lineno > 0 && !view->line[prev_lineno].data)
4380 prev_lineno--;
4382 /* If the above fails, always skip the "On branch" line. */
4383 if (prev_lineno < view->lines)
4384 view->lineno = prev_lineno;
4385 else
4386 view->lineno = 1;
4388 if (view->lineno < view->offset)
4389 view->offset = view->lineno;
4390 else if (view->offset + view->height <= view->lineno)
4391 view->offset = view->lineno - view->height + 1;
4393 return TRUE;
4394 }
4396 static bool
4397 status_draw(struct view *view, struct line *line, unsigned int lineno)
4398 {
4399 struct status *status = line->data;
4400 enum line_type type;
4401 const char *text;
4403 if (!status) {
4404 switch (line->type) {
4405 case LINE_STAT_STAGED:
4406 type = LINE_STAT_SECTION;
4407 text = "Changes to be committed:";
4408 break;
4410 case LINE_STAT_UNSTAGED:
4411 type = LINE_STAT_SECTION;
4412 text = "Changed but not updated:";
4413 break;
4415 case LINE_STAT_UNTRACKED:
4416 type = LINE_STAT_SECTION;
4417 text = "Untracked files:";
4418 break;
4420 case LINE_STAT_NONE:
4421 type = LINE_DEFAULT;
4422 text = " (no files)";
4423 break;
4425 case LINE_STAT_HEAD:
4426 type = LINE_STAT_HEAD;
4427 text = status_onbranch;
4428 break;
4430 default:
4431 return FALSE;
4432 }
4433 } else {
4434 static char buf[] = { '?', ' ', ' ', ' ', 0 };
4436 buf[0] = status->status;
4437 if (draw_text(view, line->type, buf, TRUE))
4438 return TRUE;
4439 type = LINE_DEFAULT;
4440 text = status->new.name;
4441 }
4443 draw_text(view, type, text, TRUE);
4444 return TRUE;
4445 }
4447 static enum request
4448 status_enter(struct view *view, struct line *line)
4449 {
4450 struct status *status = line->data;
4451 const char *oldpath = status ? status->old.name : NULL;
4452 /* Diffs for unmerged entries are empty when passing the new
4453 * path, so leave it empty. */
4454 const char *newpath = status && status->status != 'U' ? status->new.name : NULL;
4455 const char *info;
4456 enum open_flags split;
4457 struct view *stage = VIEW(REQ_VIEW_STAGE);
4459 if (line->type == LINE_STAT_NONE ||
4460 (!status && line[1].type == LINE_STAT_NONE)) {
4461 report("No file to diff");
4462 return REQ_NONE;
4463 }
4465 switch (line->type) {
4466 case LINE_STAT_STAGED:
4467 if (is_initial_commit()) {
4468 const char *no_head_diff_argv[] = {
4469 "git", "diff", "--no-color", "--patch-with-stat",
4470 "--", "/dev/null", newpath, NULL
4471 };
4473 if (!prepare_update(stage, no_head_diff_argv, opt_cdup, FORMAT_DASH))
4474 return REQ_QUIT;
4475 } else {
4476 const char *index_show_argv[] = {
4477 "git", "diff-index", "--root", "--patch-with-stat",
4478 "-C", "-M", "--cached", "HEAD", "--",
4479 oldpath, newpath, NULL
4480 };
4482 if (!prepare_update(stage, index_show_argv, opt_cdup, FORMAT_DASH))
4483 return REQ_QUIT;
4484 }
4486 if (status)
4487 info = "Staged changes to %s";
4488 else
4489 info = "Staged changes";
4490 break;
4492 case LINE_STAT_UNSTAGED:
4493 {
4494 const char *files_show_argv[] = {
4495 "git", "diff-files", "--root", "--patch-with-stat",
4496 "-C", "-M", "--", oldpath, newpath, NULL
4497 };
4499 if (!prepare_update(stage, files_show_argv, opt_cdup, FORMAT_DASH))
4500 return REQ_QUIT;
4501 if (status)
4502 info = "Unstaged changes to %s";
4503 else
4504 info = "Unstaged changes";
4505 break;
4506 }
4507 case LINE_STAT_UNTRACKED:
4508 if (!newpath) {
4509 report("No file to show");
4510 return REQ_NONE;
4511 }
4513 if (!suffixcmp(status->new.name, -1, "/")) {
4514 report("Cannot display a directory");
4515 return REQ_NONE;
4516 }
4518 if (!prepare_update_file(stage, newpath))
4519 return REQ_QUIT;
4520 info = "Untracked file %s";
4521 break;
4523 case LINE_STAT_HEAD:
4524 return REQ_NONE;
4526 default:
4527 die("line type %d not handled in switch", line->type);
4528 }
4530 split = view_is_displayed(view) ? OPEN_SPLIT : 0;
4531 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH | split);
4532 if (view_is_displayed(VIEW(REQ_VIEW_STAGE))) {
4533 if (status) {
4534 stage_status = *status;
4535 } else {
4536 memset(&stage_status, 0, sizeof(stage_status));
4537 }
4539 stage_line_type = line->type;
4540 stage_chunks = 0;
4541 string_format(VIEW(REQ_VIEW_STAGE)->ref, info, stage_status.new.name);
4542 }
4544 return REQ_NONE;
4545 }
4547 static bool
4548 status_exists(struct status *status, enum line_type type)
4549 {
4550 struct view *view = VIEW(REQ_VIEW_STATUS);
4551 struct line *line;
4553 for (line = view->line; line < view->line + view->lines; line++) {
4554 struct status *pos = line->data;
4556 if (line->type == type && pos &&
4557 !strcmp(status->new.name, pos->new.name))
4558 return TRUE;
4559 }
4561 return FALSE;
4562 }
4565 static bool
4566 status_update_prepare(struct io *io, enum line_type type)
4567 {
4568 const char *staged_argv[] = {
4569 "git", "update-index", "-z", "--index-info", NULL
4570 };
4571 const char *others_argv[] = {
4572 "git", "update-index", "-z", "--add", "--remove", "--stdin", NULL
4573 };
4575 switch (type) {
4576 case LINE_STAT_STAGED:
4577 return run_io(io, staged_argv, opt_cdup, IO_WR);
4579 case LINE_STAT_UNSTAGED:
4580 return run_io(io, others_argv, opt_cdup, IO_WR);
4582 case LINE_STAT_UNTRACKED:
4583 return run_io(io, others_argv, NULL, IO_WR);
4585 default:
4586 die("line type %d not handled in switch", type);
4587 return FALSE;
4588 }
4589 }
4591 static bool
4592 status_update_write(struct io *io, struct status *status, enum line_type type)
4593 {
4594 char buf[SIZEOF_STR];
4595 size_t bufsize = 0;
4597 switch (type) {
4598 case LINE_STAT_STAGED:
4599 if (!string_format_from(buf, &bufsize, "%06o %s\t%s%c",
4600 status->old.mode,
4601 status->old.rev,
4602 status->old.name, 0))
4603 return FALSE;
4604 break;
4606 case LINE_STAT_UNSTAGED:
4607 case LINE_STAT_UNTRACKED:
4608 if (!string_format_from(buf, &bufsize, "%s%c", status->new.name, 0))
4609 return FALSE;
4610 break;
4612 default:
4613 die("line type %d not handled in switch", type);
4614 }
4616 return io_write(io, buf, bufsize);
4617 }
4619 static bool
4620 status_update_file(struct status *status, enum line_type type)
4621 {
4622 struct io io = {};
4623 bool result;
4625 if (!status_update_prepare(&io, type))
4626 return FALSE;
4628 result = status_update_write(&io, status, type);
4629 done_io(&io);
4630 return result;
4631 }
4633 static bool
4634 status_update_files(struct view *view, struct line *line)
4635 {
4636 struct io io = {};
4637 bool result = TRUE;
4638 struct line *pos = view->line + view->lines;
4639 int files = 0;
4640 int file, done;
4642 if (!status_update_prepare(&io, line->type))
4643 return FALSE;
4645 for (pos = line; pos < view->line + view->lines && pos->data; pos++)
4646 files++;
4648 for (file = 0, done = 0; result && file < files; line++, file++) {
4649 int almost_done = file * 100 / files;
4651 if (almost_done > done) {
4652 done = almost_done;
4653 string_format(view->ref, "updating file %u of %u (%d%% done)",
4654 file, files, done);
4655 update_view_title(view);
4656 }
4657 result = status_update_write(&io, line->data, line->type);
4658 }
4660 done_io(&io);
4661 return result;
4662 }
4664 static bool
4665 status_update(struct view *view)
4666 {
4667 struct line *line = &view->line[view->lineno];
4669 assert(view->lines);
4671 if (!line->data) {
4672 /* This should work even for the "On branch" line. */
4673 if (line < view->line + view->lines && !line[1].data) {
4674 report("Nothing to update");
4675 return FALSE;
4676 }
4678 if (!status_update_files(view, line + 1)) {
4679 report("Failed to update file status");
4680 return FALSE;
4681 }
4683 } else if (!status_update_file(line->data, line->type)) {
4684 report("Failed to update file status");
4685 return FALSE;
4686 }
4688 return TRUE;
4689 }
4691 static bool
4692 status_revert(struct status *status, enum line_type type, bool has_none)
4693 {
4694 if (!status || type != LINE_STAT_UNSTAGED) {
4695 if (type == LINE_STAT_STAGED) {
4696 report("Cannot revert changes to staged files");
4697 } else if (type == LINE_STAT_UNTRACKED) {
4698 report("Cannot revert changes to untracked files");
4699 } else if (has_none) {
4700 report("Nothing to revert");
4701 } else {
4702 report("Cannot revert changes to multiple files");
4703 }
4704 return FALSE;
4706 } else {
4707 const char *checkout_argv[] = {
4708 "git", "checkout", "--", status->old.name, NULL
4709 };
4711 if (!prompt_yesno("Are you sure you want to overwrite any changes?"))
4712 return FALSE;
4713 return run_io_fg(checkout_argv, opt_cdup);
4714 }
4715 }
4717 static enum request
4718 status_request(struct view *view, enum request request, struct line *line)
4719 {
4720 struct status *status = line->data;
4722 switch (request) {
4723 case REQ_STATUS_UPDATE:
4724 if (!status_update(view))
4725 return REQ_NONE;
4726 break;
4728 case REQ_STATUS_REVERT:
4729 if (!status_revert(status, line->type, status_has_none(view, line)))
4730 return REQ_NONE;
4731 break;
4733 case REQ_STATUS_MERGE:
4734 if (!status || status->status != 'U') {
4735 report("Merging only possible for files with unmerged status ('U').");
4736 return REQ_NONE;
4737 }
4738 open_mergetool(status->new.name);
4739 break;
4741 case REQ_EDIT:
4742 if (!status)
4743 return request;
4744 if (status->status == 'D') {
4745 report("File has been deleted.");
4746 return REQ_NONE;
4747 }
4749 open_editor(status->status != '?', status->new.name);
4750 break;
4752 case REQ_VIEW_BLAME:
4753 if (status) {
4754 string_copy(opt_file, status->new.name);
4755 opt_ref[0] = 0;
4756 }
4757 return request;
4759 case REQ_ENTER:
4760 /* After returning the status view has been split to
4761 * show the stage view. No further reloading is
4762 * necessary. */
4763 status_enter(view, line);
4764 return REQ_NONE;
4766 case REQ_REFRESH:
4767 /* Simply reload the view. */
4768 break;
4770 default:
4771 return request;
4772 }
4774 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD);
4776 return REQ_NONE;
4777 }
4779 static void
4780 status_select(struct view *view, struct line *line)
4781 {
4782 struct status *status = line->data;
4783 char file[SIZEOF_STR] = "all files";
4784 const char *text;
4785 const char *key;
4787 if (status && !string_format(file, "'%s'", status->new.name))
4788 return;
4790 if (!status && line[1].type == LINE_STAT_NONE)
4791 line++;
4793 switch (line->type) {
4794 case LINE_STAT_STAGED:
4795 text = "Press %s to unstage %s for commit";
4796 break;
4798 case LINE_STAT_UNSTAGED:
4799 text = "Press %s to stage %s for commit";
4800 break;
4802 case LINE_STAT_UNTRACKED:
4803 text = "Press %s to stage %s for addition";
4804 break;
4806 case LINE_STAT_HEAD:
4807 case LINE_STAT_NONE:
4808 text = "Nothing to update";
4809 break;
4811 default:
4812 die("line type %d not handled in switch", line->type);
4813 }
4815 if (status && status->status == 'U') {
4816 text = "Press %s to resolve conflict in %s";
4817 key = get_key(REQ_STATUS_MERGE);
4819 } else {
4820 key = get_key(REQ_STATUS_UPDATE);
4821 }
4823 string_format(view->ref, text, key, file);
4824 }
4826 static bool
4827 status_grep(struct view *view, struct line *line)
4828 {
4829 struct status *status = line->data;
4830 enum { S_STATUS, S_NAME, S_END } state;
4831 char buf[2] = "?";
4832 regmatch_t pmatch;
4834 if (!status)
4835 return FALSE;
4837 for (state = S_STATUS; state < S_END; state++) {
4838 const char *text;
4840 switch (state) {
4841 case S_NAME: text = status->new.name; break;
4842 case S_STATUS:
4843 buf[0] = status->status;
4844 text = buf;
4845 break;
4847 default:
4848 return FALSE;
4849 }
4851 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
4852 return TRUE;
4853 }
4855 return FALSE;
4856 }
4858 static struct view_ops status_ops = {
4859 "file",
4860 NULL,
4861 status_open,
4862 NULL,
4863 status_draw,
4864 status_request,
4865 status_grep,
4866 status_select,
4867 };
4870 static bool
4871 stage_diff_write(struct io *io, struct line *line, struct line *end)
4872 {
4873 while (line < end) {
4874 if (!io_write(io, line->data, strlen(line->data)) ||
4875 !io_write(io, "\n", 1))
4876 return FALSE;
4877 line++;
4878 if (line->type == LINE_DIFF_CHUNK ||
4879 line->type == LINE_DIFF_HEADER)
4880 break;
4881 }
4883 return TRUE;
4884 }
4886 static struct line *
4887 stage_diff_find(struct view *view, struct line *line, enum line_type type)
4888 {
4889 for (; view->line < line; line--)
4890 if (line->type == type)
4891 return line;
4893 return NULL;
4894 }
4896 static bool
4897 stage_apply_chunk(struct view *view, struct line *chunk, bool revert)
4898 {
4899 const char *apply_argv[SIZEOF_ARG] = {
4900 "git", "apply", "--whitespace=nowarn", NULL
4901 };
4902 struct line *diff_hdr;
4903 struct io io = {};
4904 int argc = 3;
4906 diff_hdr = stage_diff_find(view, chunk, LINE_DIFF_HEADER);
4907 if (!diff_hdr)
4908 return FALSE;
4910 if (!revert)
4911 apply_argv[argc++] = "--cached";
4912 if (revert || stage_line_type == LINE_STAT_STAGED)
4913 apply_argv[argc++] = "-R";
4914 apply_argv[argc++] = "-";
4915 apply_argv[argc++] = NULL;
4916 if (!run_io(&io, apply_argv, opt_cdup, IO_WR))
4917 return FALSE;
4919 if (!stage_diff_write(&io, diff_hdr, chunk) ||
4920 !stage_diff_write(&io, chunk, view->line + view->lines))
4921 chunk = NULL;
4923 done_io(&io);
4924 run_io_bg(update_index_argv);
4926 return chunk ? TRUE : FALSE;
4927 }
4929 static bool
4930 stage_update(struct view *view, struct line *line)
4931 {
4932 struct line *chunk = NULL;
4934 if (!is_initial_commit() && stage_line_type != LINE_STAT_UNTRACKED)
4935 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
4937 if (chunk) {
4938 if (!stage_apply_chunk(view, chunk, FALSE)) {
4939 report("Failed to apply chunk");
4940 return FALSE;
4941 }
4943 } else if (!stage_status.status) {
4944 view = VIEW(REQ_VIEW_STATUS);
4946 for (line = view->line; line < view->line + view->lines; line++)
4947 if (line->type == stage_line_type)
4948 break;
4950 if (!status_update_files(view, line + 1)) {
4951 report("Failed to update files");
4952 return FALSE;
4953 }
4955 } else if (!status_update_file(&stage_status, stage_line_type)) {
4956 report("Failed to update file");
4957 return FALSE;
4958 }
4960 return TRUE;
4961 }
4963 static bool
4964 stage_revert(struct view *view, struct line *line)
4965 {
4966 struct line *chunk = NULL;
4968 if (!is_initial_commit() && stage_line_type == LINE_STAT_UNSTAGED)
4969 chunk = stage_diff_find(view, line, LINE_DIFF_CHUNK);
4971 if (chunk) {
4972 if (!prompt_yesno("Are you sure you want to revert changes?"))
4973 return FALSE;
4975 if (!stage_apply_chunk(view, chunk, TRUE)) {
4976 report("Failed to revert chunk");
4977 return FALSE;
4978 }
4979 return TRUE;
4981 } else {
4982 return status_revert(stage_status.status ? &stage_status : NULL,
4983 stage_line_type, FALSE);
4984 }
4985 }
4988 static void
4989 stage_next(struct view *view, struct line *line)
4990 {
4991 int i;
4993 if (!stage_chunks) {
4994 static size_t alloc = 0;
4995 int *tmp;
4997 for (line = view->line; line < view->line + view->lines; line++) {
4998 if (line->type != LINE_DIFF_CHUNK)
4999 continue;
5001 tmp = realloc_items(stage_chunk, &alloc,
5002 stage_chunks, sizeof(*tmp));
5003 if (!tmp) {
5004 report("Allocation failure");
5005 return;
5006 }
5008 stage_chunk = tmp;
5009 stage_chunk[stage_chunks++] = line - view->line;
5010 }
5011 }
5013 for (i = 0; i < stage_chunks; i++) {
5014 if (stage_chunk[i] > view->lineno) {
5015 do_scroll_view(view, stage_chunk[i] - view->lineno);
5016 report("Chunk %d of %d", i + 1, stage_chunks);
5017 return;
5018 }
5019 }
5021 report("No next chunk found");
5022 }
5024 static enum request
5025 stage_request(struct view *view, enum request request, struct line *line)
5026 {
5027 switch (request) {
5028 case REQ_STATUS_UPDATE:
5029 if (!stage_update(view, line))
5030 return REQ_NONE;
5031 break;
5033 case REQ_STATUS_REVERT:
5034 if (!stage_revert(view, line))
5035 return REQ_NONE;
5036 break;
5038 case REQ_STAGE_NEXT:
5039 if (stage_line_type == LINE_STAT_UNTRACKED) {
5040 report("File is untracked; press %s to add",
5041 get_key(REQ_STATUS_UPDATE));
5042 return REQ_NONE;
5043 }
5044 stage_next(view, line);
5045 return REQ_NONE;
5047 case REQ_EDIT:
5048 if (!stage_status.new.name[0])
5049 return request;
5050 if (stage_status.status == 'D') {
5051 report("File has been deleted.");
5052 return REQ_NONE;
5053 }
5055 open_editor(stage_status.status != '?', stage_status.new.name);
5056 break;
5058 case REQ_REFRESH:
5059 /* Reload everything ... */
5060 break;
5062 case REQ_VIEW_BLAME:
5063 if (stage_status.new.name[0]) {
5064 string_copy(opt_file, stage_status.new.name);
5065 opt_ref[0] = 0;
5066 }
5067 return request;
5069 case REQ_ENTER:
5070 return pager_request(view, request, line);
5072 default:
5073 return request;
5074 }
5076 open_view(view, REQ_VIEW_STATUS, OPEN_RELOAD | OPEN_NOMAXIMIZE);
5078 /* Check whether the staged entry still exists, and close the
5079 * stage view if it doesn't. */
5080 if (!status_exists(&stage_status, stage_line_type))
5081 return REQ_VIEW_CLOSE;
5083 if (stage_line_type == LINE_STAT_UNTRACKED) {
5084 if (!suffixcmp(stage_status.new.name, -1, "/")) {
5085 report("Cannot display a directory");
5086 return REQ_NONE;
5087 }
5089 if (!prepare_update_file(view, stage_status.new.name)) {
5090 report("Failed to open file: %s", strerror(errno));
5091 return REQ_NONE;
5092 }
5093 }
5094 open_view(view, REQ_VIEW_STAGE, OPEN_REFRESH);
5096 return REQ_NONE;
5097 }
5099 static struct view_ops stage_ops = {
5100 "line",
5101 NULL,
5102 NULL,
5103 pager_read,
5104 pager_draw,
5105 stage_request,
5106 pager_grep,
5107 pager_select,
5108 };
5111 /*
5112 * Revision graph
5113 */
5115 struct commit {
5116 char id[SIZEOF_REV]; /* SHA1 ID. */
5117 char title[128]; /* First line of the commit message. */
5118 char author[75]; /* Author of the commit. */
5119 struct tm time; /* Date from the author ident. */
5120 struct ref **refs; /* Repository references. */
5121 chtype graph[SIZEOF_REVGRAPH]; /* Ancestry chain graphics. */
5122 size_t graph_size; /* The width of the graph array. */
5123 bool has_parents; /* Rewritten --parents seen. */
5124 };
5126 /* Size of rev graph with no "padding" columns */
5127 #define SIZEOF_REVITEMS (SIZEOF_REVGRAPH - (SIZEOF_REVGRAPH / 2))
5129 struct rev_graph {
5130 struct rev_graph *prev, *next, *parents;
5131 char rev[SIZEOF_REVITEMS][SIZEOF_REV];
5132 size_t size;
5133 struct commit *commit;
5134 size_t pos;
5135 unsigned int boundary:1;
5136 };
5138 /* Parents of the commit being visualized. */
5139 static struct rev_graph graph_parents[4];
5141 /* The current stack of revisions on the graph. */
5142 static struct rev_graph graph_stacks[4] = {
5143 { &graph_stacks[3], &graph_stacks[1], &graph_parents[0] },
5144 { &graph_stacks[0], &graph_stacks[2], &graph_parents[1] },
5145 { &graph_stacks[1], &graph_stacks[3], &graph_parents[2] },
5146 { &graph_stacks[2], &graph_stacks[0], &graph_parents[3] },
5147 };
5149 static inline bool
5150 graph_parent_is_merge(struct rev_graph *graph)
5151 {
5152 return graph->parents->size > 1;
5153 }
5155 static inline void
5156 append_to_rev_graph(struct rev_graph *graph, chtype symbol)
5157 {
5158 struct commit *commit = graph->commit;
5160 if (commit->graph_size < ARRAY_SIZE(commit->graph) - 1)
5161 commit->graph[commit->graph_size++] = symbol;
5162 }
5164 static void
5165 clear_rev_graph(struct rev_graph *graph)
5166 {
5167 graph->boundary = 0;
5168 graph->size = graph->pos = 0;
5169 graph->commit = NULL;
5170 memset(graph->parents, 0, sizeof(*graph->parents));
5171 }
5173 static void
5174 done_rev_graph(struct rev_graph *graph)
5175 {
5176 if (graph_parent_is_merge(graph) &&
5177 graph->pos < graph->size - 1 &&
5178 graph->next->size == graph->size + graph->parents->size - 1) {
5179 size_t i = graph->pos + graph->parents->size - 1;
5181 graph->commit->graph_size = i * 2;
5182 while (i < graph->next->size - 1) {
5183 append_to_rev_graph(graph, ' ');
5184 append_to_rev_graph(graph, '\\');
5185 i++;
5186 }
5187 }
5189 clear_rev_graph(graph);
5190 }
5192 static void
5193 push_rev_graph(struct rev_graph *graph, const char *parent)
5194 {
5195 int i;
5197 /* "Collapse" duplicate parents lines.
5198 *
5199 * FIXME: This needs to also update update the drawn graph but
5200 * for now it just serves as a method for pruning graph lines. */
5201 for (i = 0; i < graph->size; i++)
5202 if (!strncmp(graph->rev[i], parent, SIZEOF_REV))
5203 return;
5205 if (graph->size < SIZEOF_REVITEMS) {
5206 string_copy_rev(graph->rev[graph->size++], parent);
5207 }
5208 }
5210 static chtype
5211 get_rev_graph_symbol(struct rev_graph *graph)
5212 {
5213 chtype symbol;
5215 if (graph->boundary)
5216 symbol = REVGRAPH_BOUND;
5217 else if (graph->parents->size == 0)
5218 symbol = REVGRAPH_INIT;
5219 else if (graph_parent_is_merge(graph))
5220 symbol = REVGRAPH_MERGE;
5221 else if (graph->pos >= graph->size)
5222 symbol = REVGRAPH_BRANCH;
5223 else
5224 symbol = REVGRAPH_COMMIT;
5226 return symbol;
5227 }
5229 static void
5230 draw_rev_graph(struct rev_graph *graph)
5231 {
5232 struct rev_filler {
5233 chtype separator, line;
5234 };
5235 enum { DEFAULT, RSHARP, RDIAG, LDIAG };
5236 static struct rev_filler fillers[] = {
5237 { ' ', '|' },
5238 { '`', '.' },
5239 { '\'', ' ' },
5240 { '/', ' ' },
5241 };
5242 chtype symbol = get_rev_graph_symbol(graph);
5243 struct rev_filler *filler;
5244 size_t i;
5246 if (opt_line_graphics)
5247 fillers[DEFAULT].line = line_graphics[LINE_GRAPHIC_VLINE];
5249 filler = &fillers[DEFAULT];
5251 for (i = 0; i < graph->pos; i++) {
5252 append_to_rev_graph(graph, filler->line);
5253 if (graph_parent_is_merge(graph->prev) &&
5254 graph->prev->pos == i)
5255 filler = &fillers[RSHARP];
5257 append_to_rev_graph(graph, filler->separator);
5258 }
5260 /* Place the symbol for this revision. */
5261 append_to_rev_graph(graph, symbol);
5263 if (graph->prev->size > graph->size)
5264 filler = &fillers[RDIAG];
5265 else
5266 filler = &fillers[DEFAULT];
5268 i++;
5270 for (; i < graph->size; i++) {
5271 append_to_rev_graph(graph, filler->separator);
5272 append_to_rev_graph(graph, filler->line);
5273 if (graph_parent_is_merge(graph->prev) &&
5274 i < graph->prev->pos + graph->parents->size)
5275 filler = &fillers[RSHARP];
5276 if (graph->prev->size > graph->size)
5277 filler = &fillers[LDIAG];
5278 }
5280 if (graph->prev->size > graph->size) {
5281 append_to_rev_graph(graph, filler->separator);
5282 if (filler->line != ' ')
5283 append_to_rev_graph(graph, filler->line);
5284 }
5285 }
5287 /* Prepare the next rev graph */
5288 static void
5289 prepare_rev_graph(struct rev_graph *graph)
5290 {
5291 size_t i;
5293 /* First, traverse all lines of revisions up to the active one. */
5294 for (graph->pos = 0; graph->pos < graph->size; graph->pos++) {
5295 if (!strcmp(graph->rev[graph->pos], graph->commit->id))
5296 break;
5298 push_rev_graph(graph->next, graph->rev[graph->pos]);
5299 }
5301 /* Interleave the new revision parent(s). */
5302 for (i = 0; !graph->boundary && i < graph->parents->size; i++)
5303 push_rev_graph(graph->next, graph->parents->rev[i]);
5305 /* Lastly, put any remaining revisions. */
5306 for (i = graph->pos + 1; i < graph->size; i++)
5307 push_rev_graph(graph->next, graph->rev[i]);
5308 }
5310 static void
5311 update_rev_graph(struct rev_graph *graph)
5312 {
5313 /* If this is the finalizing update ... */
5314 if (graph->commit)
5315 prepare_rev_graph(graph);
5317 /* Graph visualization needs a one rev look-ahead,
5318 * so the first update doesn't visualize anything. */
5319 if (!graph->prev->commit)
5320 return;
5322 draw_rev_graph(graph->prev);
5323 done_rev_graph(graph->prev->prev);
5324 }
5327 /*
5328 * Main view backend
5329 */
5331 static const char *main_argv[SIZEOF_ARG] = {
5332 "git", "log", "--no-color", "--pretty=raw", "--parents",
5333 "--topo-order", "%(head)", NULL
5334 };
5336 static bool
5337 main_draw(struct view *view, struct line *line, unsigned int lineno)
5338 {
5339 struct commit *commit = line->data;
5341 if (!*commit->author)
5342 return FALSE;
5344 if (opt_date && draw_date(view, &commit->time))
5345 return TRUE;
5347 if (opt_author &&
5348 draw_field(view, LINE_MAIN_AUTHOR, commit->author, opt_author_cols, TRUE))
5349 return TRUE;
5351 if (opt_rev_graph && commit->graph_size &&
5352 draw_graphic(view, LINE_MAIN_REVGRAPH, commit->graph, commit->graph_size))
5353 return TRUE;
5355 if (opt_show_refs && commit->refs) {
5356 size_t i = 0;
5358 do {
5359 enum line_type type;
5361 if (commit->refs[i]->head)
5362 type = LINE_MAIN_HEAD;
5363 else if (commit->refs[i]->ltag)
5364 type = LINE_MAIN_LOCAL_TAG;
5365 else if (commit->refs[i]->tag)
5366 type = LINE_MAIN_TAG;
5367 else if (commit->refs[i]->tracked)
5368 type = LINE_MAIN_TRACKED;
5369 else if (commit->refs[i]->remote)
5370 type = LINE_MAIN_REMOTE;
5371 else
5372 type = LINE_MAIN_REF;
5374 if (draw_text(view, type, "[", TRUE) ||
5375 draw_text(view, type, commit->refs[i]->name, TRUE) ||
5376 draw_text(view, type, "]", TRUE))
5377 return TRUE;
5379 if (draw_text(view, LINE_DEFAULT, " ", TRUE))
5380 return TRUE;
5381 } while (commit->refs[i++]->next);
5382 }
5384 draw_text(view, LINE_DEFAULT, commit->title, TRUE);
5385 return TRUE;
5386 }
5388 /* Reads git log --pretty=raw output and parses it into the commit struct. */
5389 static bool
5390 main_read(struct view *view, char *line)
5391 {
5392 static struct rev_graph *graph = graph_stacks;
5393 enum line_type type;
5394 struct commit *commit;
5396 if (!line) {
5397 int i;
5399 if (!view->lines && !view->parent)
5400 die("No revisions match the given arguments.");
5401 if (view->lines > 0) {
5402 commit = view->line[view->lines - 1].data;
5403 if (!*commit->author) {
5404 view->lines--;
5405 free(commit);
5406 graph->commit = NULL;
5407 }
5408 }
5409 update_rev_graph(graph);
5411 for (i = 0; i < ARRAY_SIZE(graph_stacks); i++)
5412 clear_rev_graph(&graph_stacks[i]);
5413 return TRUE;
5414 }
5416 type = get_line_type(line);
5417 if (type == LINE_COMMIT) {
5418 commit = calloc(1, sizeof(struct commit));
5419 if (!commit)
5420 return FALSE;
5422 line += STRING_SIZE("commit ");
5423 if (*line == '-') {
5424 graph->boundary = 1;
5425 line++;
5426 }
5428 string_copy_rev(commit->id, line);
5429 commit->refs = get_refs(commit->id);
5430 graph->commit = commit;
5431 add_line_data(view, commit, LINE_MAIN_COMMIT);
5433 while ((line = strchr(line, ' '))) {
5434 line++;
5435 push_rev_graph(graph->parents, line);
5436 commit->has_parents = TRUE;
5437 }
5438 return TRUE;
5439 }
5441 if (!view->lines)
5442 return TRUE;
5443 commit = view->line[view->lines - 1].data;
5445 switch (type) {
5446 case LINE_PARENT:
5447 if (commit->has_parents)
5448 break;
5449 push_rev_graph(graph->parents, line + STRING_SIZE("parent "));
5450 break;
5452 case LINE_AUTHOR:
5453 {
5454 /* Parse author lines where the name may be empty:
5455 * author <email@address.tld> 1138474660 +0100
5456 */
5457 char *ident = line + STRING_SIZE("author ");
5458 char *nameend = strchr(ident, '<');
5459 char *emailend = strchr(ident, '>');
5461 if (!nameend || !emailend)
5462 break;
5464 update_rev_graph(graph);
5465 graph = graph->next;
5467 *nameend = *emailend = 0;
5468 ident = chomp_string(ident);
5469 if (!*ident) {
5470 ident = chomp_string(nameend + 1);
5471 if (!*ident)
5472 ident = "Unknown";
5473 }
5475 string_ncopy(commit->author, ident, strlen(ident));
5477 /* Parse epoch and timezone */
5478 if (emailend[1] == ' ') {
5479 char *secs = emailend + 2;
5480 char *zone = strchr(secs, ' ');
5481 time_t time = (time_t) atol(secs);
5483 if (zone && strlen(zone) == STRING_SIZE(" +0700")) {
5484 long tz;
5486 zone++;
5487 tz = ('0' - zone[1]) * 60 * 60 * 10;
5488 tz += ('0' - zone[2]) * 60 * 60;
5489 tz += ('0' - zone[3]) * 60;
5490 tz += ('0' - zone[4]) * 60;
5492 if (zone[0] == '-')
5493 tz = -tz;
5495 time -= tz;
5496 }
5498 gmtime_r(&time, &commit->time);
5499 }
5500 break;
5501 }
5502 default:
5503 /* Fill in the commit title if it has not already been set. */
5504 if (commit->title[0])
5505 break;
5507 /* Require titles to start with a non-space character at the
5508 * offset used by git log. */
5509 if (strncmp(line, " ", 4))
5510 break;
5511 line += 4;
5512 /* Well, if the title starts with a whitespace character,
5513 * try to be forgiving. Otherwise we end up with no title. */
5514 while (isspace(*line))
5515 line++;
5516 if (*line == '\0')
5517 break;
5518 /* FIXME: More graceful handling of titles; append "..." to
5519 * shortened titles, etc. */
5521 string_ncopy(commit->title, line, strlen(line));
5522 }
5524 return TRUE;
5525 }
5527 static enum request
5528 main_request(struct view *view, enum request request, struct line *line)
5529 {
5530 enum open_flags flags = display[0] == view ? OPEN_SPLIT : OPEN_DEFAULT;
5532 switch (request) {
5533 case REQ_ENTER:
5534 open_view(view, REQ_VIEW_DIFF, flags);
5535 break;
5536 case REQ_REFRESH:
5537 load_refs();
5538 open_view(view, REQ_VIEW_MAIN, OPEN_REFRESH);
5539 break;
5540 default:
5541 return request;
5542 }
5544 return REQ_NONE;
5545 }
5547 static bool
5548 grep_refs(struct ref **refs, regex_t *regex)
5549 {
5550 regmatch_t pmatch;
5551 size_t i = 0;
5553 if (!refs)
5554 return FALSE;
5555 do {
5556 if (regexec(regex, refs[i]->name, 1, &pmatch, 0) != REG_NOMATCH)
5557 return TRUE;
5558 } while (refs[i++]->next);
5560 return FALSE;
5561 }
5563 static bool
5564 main_grep(struct view *view, struct line *line)
5565 {
5566 struct commit *commit = line->data;
5567 enum { S_TITLE, S_AUTHOR, S_DATE, S_REFS, S_END } state;
5568 char buf[DATE_COLS + 1];
5569 regmatch_t pmatch;
5571 for (state = S_TITLE; state < S_END; state++) {
5572 char *text;
5574 switch (state) {
5575 case S_TITLE: text = commit->title; break;
5576 case S_AUTHOR:
5577 if (!opt_author)
5578 continue;
5579 text = commit->author;
5580 break;
5581 case S_DATE:
5582 if (!opt_date)
5583 continue;
5584 if (!strftime(buf, sizeof(buf), DATE_FORMAT, &commit->time))
5585 continue;
5586 text = buf;
5587 break;
5588 case S_REFS:
5589 if (!opt_show_refs)
5590 continue;
5591 if (grep_refs(commit->refs, view->regex) == TRUE)
5592 return TRUE;
5593 continue;
5594 default:
5595 return FALSE;
5596 }
5598 if (regexec(view->regex, text, 1, &pmatch, 0) != REG_NOMATCH)
5599 return TRUE;
5600 }
5602 return FALSE;
5603 }
5605 static void
5606 main_select(struct view *view, struct line *line)
5607 {
5608 struct commit *commit = line->data;
5610 string_copy_rev(view->ref, commit->id);
5611 string_copy_rev(ref_commit, view->ref);
5612 }
5614 static struct view_ops main_ops = {
5615 "commit",
5616 main_argv,
5617 NULL,
5618 main_read,
5619 main_draw,
5620 main_request,
5621 main_grep,
5622 main_select,
5623 };
5626 /*
5627 * Unicode / UTF-8 handling
5628 *
5629 * NOTE: Much of the following code for dealing with unicode is derived from
5630 * ELinks' UTF-8 code developed by Scrool <scroolik@gmail.com>. Origin file is
5631 * src/intl/charset.c from the utf8 branch commit elinks-0.11.0-g31f2c28.
5632 */
5634 /* I've (over)annotated a lot of code snippets because I am not entirely
5635 * confident that the approach taken by this small UTF-8 interface is correct.
5636 * --jonas */
5638 static inline int
5639 unicode_width(unsigned long c)
5640 {
5641 if (c >= 0x1100 &&
5642 (c <= 0x115f /* Hangul Jamo */
5643 || c == 0x2329
5644 || c == 0x232a
5645 || (c >= 0x2e80 && c <= 0xa4cf && c != 0x303f)
5646 /* CJK ... Yi */
5647 || (c >= 0xac00 && c <= 0xd7a3) /* Hangul Syllables */
5648 || (c >= 0xf900 && c <= 0xfaff) /* CJK Compatibility Ideographs */
5649 || (c >= 0xfe30 && c <= 0xfe6f) /* CJK Compatibility Forms */
5650 || (c >= 0xff00 && c <= 0xff60) /* Fullwidth Forms */
5651 || (c >= 0xffe0 && c <= 0xffe6)
5652 || (c >= 0x20000 && c <= 0x2fffd)
5653 || (c >= 0x30000 && c <= 0x3fffd)))
5654 return 2;
5656 if (c == '\t')
5657 return opt_tab_size;
5659 return 1;
5660 }
5662 /* Number of bytes used for encoding a UTF-8 character indexed by first byte.
5663 * Illegal bytes are set one. */
5664 static const unsigned char utf8_bytes[256] = {
5665 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
5666 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
5667 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
5668 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
5669 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
5670 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,
5671 2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2, 2,2,2,2,2,2,2,2,
5672 3,3,3,3,3,3,3,3, 3,3,3,3,3,3,3,3, 4,4,4,4,4,4,4,4, 5,5,5,5,6,6,1,1,
5673 };
5675 /* Decode UTF-8 multi-byte representation into a unicode character. */
5676 static inline unsigned long
5677 utf8_to_unicode(const char *string, size_t length)
5678 {
5679 unsigned long unicode;
5681 switch (length) {
5682 case 1:
5683 unicode = string[0];
5684 break;
5685 case 2:
5686 unicode = (string[0] & 0x1f) << 6;
5687 unicode += (string[1] & 0x3f);
5688 break;
5689 case 3:
5690 unicode = (string[0] & 0x0f) << 12;
5691 unicode += ((string[1] & 0x3f) << 6);
5692 unicode += (string[2] & 0x3f);
5693 break;
5694 case 4:
5695 unicode = (string[0] & 0x0f) << 18;
5696 unicode += ((string[1] & 0x3f) << 12);
5697 unicode += ((string[2] & 0x3f) << 6);
5698 unicode += (string[3] & 0x3f);
5699 break;
5700 case 5:
5701 unicode = (string[0] & 0x0f) << 24;
5702 unicode += ((string[1] & 0x3f) << 18);
5703 unicode += ((string[2] & 0x3f) << 12);
5704 unicode += ((string[3] & 0x3f) << 6);
5705 unicode += (string[4] & 0x3f);
5706 break;
5707 case 6:
5708 unicode = (string[0] & 0x01) << 30;
5709 unicode += ((string[1] & 0x3f) << 24);
5710 unicode += ((string[2] & 0x3f) << 18);
5711 unicode += ((string[3] & 0x3f) << 12);
5712 unicode += ((string[4] & 0x3f) << 6);
5713 unicode += (string[5] & 0x3f);
5714 break;
5715 default:
5716 die("Invalid unicode length");
5717 }
5719 /* Invalid characters could return the special 0xfffd value but NUL
5720 * should be just as good. */
5721 return unicode > 0xffff ? 0 : unicode;
5722 }
5724 /* Calculates how much of string can be shown within the given maximum width
5725 * and sets trimmed parameter to non-zero value if all of string could not be
5726 * shown. If the reserve flag is TRUE, it will reserve at least one
5727 * trailing character, which can be useful when drawing a delimiter.
5728 *
5729 * Returns the number of bytes to output from string to satisfy max_width. */
5730 static size_t
5731 utf8_length(const char *string, int *width, size_t max_width, int *trimmed, bool reserve)
5732 {
5733 const char *start = string;
5734 const char *end = strchr(string, '\0');
5735 unsigned char last_bytes = 0;
5736 size_t last_ucwidth = 0;
5738 *width = 0;
5739 *trimmed = 0;
5741 while (string < end) {
5742 int c = *(unsigned char *) string;
5743 unsigned char bytes = utf8_bytes[c];
5744 size_t ucwidth;
5745 unsigned long unicode;
5747 if (string + bytes > end)
5748 break;
5750 /* Change representation to figure out whether
5751 * it is a single- or double-width character. */
5753 unicode = utf8_to_unicode(string, bytes);
5754 /* FIXME: Graceful handling of invalid unicode character. */
5755 if (!unicode)
5756 break;
5758 ucwidth = unicode_width(unicode);
5759 *width += ucwidth;
5760 if (*width > max_width) {
5761 *trimmed = 1;
5762 *width -= ucwidth;
5763 if (reserve && *width == max_width) {
5764 string -= last_bytes;
5765 *width -= last_ucwidth;
5766 }
5767 break;
5768 }
5770 string += bytes;
5771 last_bytes = bytes;
5772 last_ucwidth = ucwidth;
5773 }
5775 return string - start;
5776 }
5779 /*
5780 * Status management
5781 */
5783 /* Whether or not the curses interface has been initialized. */
5784 static bool cursed = FALSE;
5786 /* The status window is used for polling keystrokes. */
5787 static WINDOW *status_win;
5789 static bool status_empty = TRUE;
5791 /* Update status and title window. */
5792 static void
5793 report(const char *msg, ...)
5794 {
5795 struct view *view = display[current_view];
5797 if (input_mode)
5798 return;
5800 if (!view) {
5801 char buf[SIZEOF_STR];
5802 va_list args;
5804 va_start(args, msg);
5805 if (vsnprintf(buf, sizeof(buf), msg, args) >= sizeof(buf)) {
5806 buf[sizeof(buf) - 1] = 0;
5807 buf[sizeof(buf) - 2] = '.';
5808 buf[sizeof(buf) - 3] = '.';
5809 buf[sizeof(buf) - 4] = '.';
5810 }
5811 va_end(args);
5812 die("%s", buf);
5813 }
5815 if (!status_empty || *msg) {
5816 va_list args;
5818 va_start(args, msg);
5820 wmove(status_win, 0, 0);
5821 if (*msg) {
5822 vwprintw(status_win, msg, args);
5823 status_empty = FALSE;
5824 } else {
5825 status_empty = TRUE;
5826 }
5827 wclrtoeol(status_win);
5828 wrefresh(status_win);
5830 va_end(args);
5831 }
5833 update_view_title(view);
5834 update_display_cursor(view);
5835 }
5837 /* Controls when nodelay should be in effect when polling user input. */
5838 static void
5839 set_nonblocking_input(bool loading)
5840 {
5841 static unsigned int loading_views;
5843 if ((loading == FALSE && loading_views-- == 1) ||
5844 (loading == TRUE && loading_views++ == 0))
5845 nodelay(status_win, loading);
5846 }
5848 static void
5849 init_display(void)
5850 {
5851 int x, y;
5853 /* Initialize the curses library */
5854 if (isatty(STDIN_FILENO)) {
5855 cursed = !!initscr();
5856 opt_tty = stdin;
5857 } else {
5858 /* Leave stdin and stdout alone when acting as a pager. */
5859 opt_tty = fopen("/dev/tty", "r+");
5860 if (!opt_tty)
5861 die("Failed to open /dev/tty");
5862 cursed = !!newterm(NULL, opt_tty, opt_tty);
5863 }
5865 if (!cursed)
5866 die("Failed to initialize curses");
5868 nonl(); /* Tell curses not to do NL->CR/NL on output */
5869 cbreak(); /* Take input chars one at a time, no wait for \n */
5870 noecho(); /* Don't echo input */
5871 leaveok(stdscr, TRUE);
5873 if (has_colors())
5874 init_colors();
5876 getmaxyx(stdscr, y, x);
5877 status_win = newwin(1, 0, y - 1, 0);
5878 if (!status_win)
5879 die("Failed to create status window");
5881 /* Enable keyboard mapping */
5882 keypad(status_win, TRUE);
5883 wbkgdset(status_win, get_line_attr(LINE_STATUS));
5885 TABSIZE = opt_tab_size;
5886 if (opt_line_graphics) {
5887 line_graphics[LINE_GRAPHIC_VLINE] = ACS_VLINE;
5888 }
5889 }
5891 static bool
5892 prompt_yesno(const char *prompt)
5893 {
5894 enum { WAIT, STOP, CANCEL } status = WAIT;
5895 bool answer = FALSE;
5897 while (status == WAIT) {
5898 struct view *view;
5899 int i, key;
5901 input_mode = TRUE;
5903 foreach_view (view, i)
5904 update_view(view);
5906 input_mode = FALSE;
5908 mvwprintw(status_win, 0, 0, "%s [Yy]/[Nn]", prompt);
5909 wclrtoeol(status_win);
5911 /* Refresh, accept single keystroke of input */
5912 key = wgetch(status_win);
5913 switch (key) {
5914 case ERR:
5915 break;
5917 case 'y':
5918 case 'Y':
5919 answer = TRUE;
5920 status = STOP;
5921 break;
5923 case KEY_ESC:
5924 case KEY_RETURN:
5925 case KEY_ENTER:
5926 case KEY_BACKSPACE:
5927 case 'n':
5928 case 'N':
5929 case '\n':
5930 default:
5931 answer = FALSE;
5932 status = CANCEL;
5933 }
5934 }
5936 /* Clear the status window */
5937 status_empty = FALSE;
5938 report("");
5940 return answer;
5941 }
5943 static char *
5944 read_prompt(const char *prompt)
5945 {
5946 enum { READING, STOP, CANCEL } status = READING;
5947 static char buf[SIZEOF_STR];
5948 int pos = 0;
5950 while (status == READING) {
5951 struct view *view;
5952 int i, key;
5954 input_mode = TRUE;
5956 foreach_view (view, i)
5957 update_view(view);
5959 input_mode = FALSE;
5961 mvwprintw(status_win, 0, 0, "%s%.*s", prompt, pos, buf);
5962 wclrtoeol(status_win);
5964 /* Refresh, accept single keystroke of input */
5965 key = wgetch(status_win);
5966 switch (key) {
5967 case KEY_RETURN:
5968 case KEY_ENTER:
5969 case '\n':
5970 status = pos ? STOP : CANCEL;
5971 break;
5973 case KEY_BACKSPACE:
5974 if (pos > 0)
5975 pos--;
5976 else
5977 status = CANCEL;
5978 break;
5980 case KEY_ESC:
5981 status = CANCEL;
5982 break;
5984 case ERR:
5985 break;
5987 default:
5988 if (pos >= sizeof(buf)) {
5989 report("Input string too long");
5990 return NULL;
5991 }
5993 if (isprint(key))
5994 buf[pos++] = (char) key;
5995 }
5996 }
5998 /* Clear the status window */
5999 status_empty = FALSE;
6000 report("");
6002 if (status == CANCEL)
6003 return NULL;
6005 buf[pos++] = 0;
6007 return buf;
6008 }
6010 /*
6011 * Repository properties
6012 */
6014 static int
6015 git_properties(const char **argv, const char *separators,
6016 int (*read_property)(char *, size_t, char *, size_t))
6017 {
6018 struct io io = {};
6020 if (init_io_rd(&io, argv, NULL, FORMAT_NONE))
6021 return read_properties(&io, separators, read_property);
6022 return ERR;
6023 }
6025 static struct ref *refs = NULL;
6026 static size_t refs_alloc = 0;
6027 static size_t refs_size = 0;
6029 /* Id <-> ref store */
6030 static struct ref ***id_refs = NULL;
6031 static size_t id_refs_alloc = 0;
6032 static size_t id_refs_size = 0;
6034 static int
6035 compare_refs(const void *ref1_, const void *ref2_)
6036 {
6037 const struct ref *ref1 = *(const struct ref **)ref1_;
6038 const struct ref *ref2 = *(const struct ref **)ref2_;
6040 if (ref1->tag != ref2->tag)
6041 return ref2->tag - ref1->tag;
6042 if (ref1->ltag != ref2->ltag)
6043 return ref2->ltag - ref2->ltag;
6044 if (ref1->head != ref2->head)
6045 return ref2->head - ref1->head;
6046 if (ref1->tracked != ref2->tracked)
6047 return ref2->tracked - ref1->tracked;
6048 if (ref1->remote != ref2->remote)
6049 return ref2->remote - ref1->remote;
6050 return strcmp(ref1->name, ref2->name);
6051 }
6053 static struct ref **
6054 get_refs(const char *id)
6055 {
6056 struct ref ***tmp_id_refs;
6057 struct ref **ref_list = NULL;
6058 size_t ref_list_alloc = 0;
6059 size_t ref_list_size = 0;
6060 size_t i;
6062 for (i = 0; i < id_refs_size; i++)
6063 if (!strcmp(id, id_refs[i][0]->id))
6064 return id_refs[i];
6066 tmp_id_refs = realloc_items(id_refs, &id_refs_alloc, id_refs_size + 1,
6067 sizeof(*id_refs));
6068 if (!tmp_id_refs)
6069 return NULL;
6071 id_refs = tmp_id_refs;
6073 for (i = 0; i < refs_size; i++) {
6074 struct ref **tmp;
6076 if (strcmp(id, refs[i].id))
6077 continue;
6079 tmp = realloc_items(ref_list, &ref_list_alloc,
6080 ref_list_size + 1, sizeof(*ref_list));
6081 if (!tmp) {
6082 if (ref_list)
6083 free(ref_list);
6084 return NULL;
6085 }
6087 ref_list = tmp;
6088 ref_list[ref_list_size] = &refs[i];
6089 /* XXX: The properties of the commit chains ensures that we can
6090 * safely modify the shared ref. The repo references will
6091 * always be similar for the same id. */
6092 ref_list[ref_list_size]->next = 1;
6094 ref_list_size++;
6095 }
6097 if (ref_list) {
6098 qsort(ref_list, ref_list_size, sizeof(*ref_list), compare_refs);
6099 ref_list[ref_list_size - 1]->next = 0;
6100 id_refs[id_refs_size++] = ref_list;
6101 }
6103 return ref_list;
6104 }
6106 static int
6107 read_ref(char *id, size_t idlen, char *name, size_t namelen)
6108 {
6109 struct ref *ref;
6110 bool tag = FALSE;
6111 bool ltag = FALSE;
6112 bool remote = FALSE;
6113 bool tracked = FALSE;
6114 bool check_replace = FALSE;
6115 bool head = FALSE;
6117 if (!prefixcmp(name, "refs/tags/")) {
6118 if (!suffixcmp(name, namelen, "^{}")) {
6119 namelen -= 3;
6120 name[namelen] = 0;
6121 if (refs_size > 0 && refs[refs_size - 1].ltag == TRUE)
6122 check_replace = TRUE;
6123 } else {
6124 ltag = TRUE;
6125 }
6127 tag = TRUE;
6128 namelen -= STRING_SIZE("refs/tags/");
6129 name += STRING_SIZE("refs/tags/");
6131 } else if (!prefixcmp(name, "refs/remotes/")) {
6132 remote = TRUE;
6133 namelen -= STRING_SIZE("refs/remotes/");
6134 name += STRING_SIZE("refs/remotes/");
6135 tracked = !strcmp(opt_remote, name);
6137 } else if (!prefixcmp(name, "refs/heads/")) {
6138 namelen -= STRING_SIZE("refs/heads/");
6139 name += STRING_SIZE("refs/heads/");
6140 head = !strncmp(opt_head, name, namelen);
6142 } else if (!strcmp(name, "HEAD")) {
6143 string_ncopy(opt_head_rev, id, idlen);
6144 return OK;
6145 }
6147 if (check_replace && !strcmp(name, refs[refs_size - 1].name)) {
6148 /* it's an annotated tag, replace the previous sha1 with the
6149 * resolved commit id; relies on the fact git-ls-remote lists
6150 * the commit id of an annotated tag right before the commit id
6151 * it points to. */
6152 refs[refs_size - 1].ltag = ltag;
6153 string_copy_rev(refs[refs_size - 1].id, id);
6155 return OK;
6156 }
6157 refs = realloc_items(refs, &refs_alloc, refs_size + 1, sizeof(*refs));
6158 if (!refs)
6159 return ERR;
6161 ref = &refs[refs_size++];
6162 ref->name = malloc(namelen + 1);
6163 if (!ref->name)
6164 return ERR;
6166 strncpy(ref->name, name, namelen);
6167 ref->name[namelen] = 0;
6168 ref->head = head;
6169 ref->tag = tag;
6170 ref->ltag = ltag;
6171 ref->remote = remote;
6172 ref->tracked = tracked;
6173 string_copy_rev(ref->id, id);
6175 return OK;
6176 }
6178 static int
6179 load_refs(void)
6180 {
6181 static const char *ls_remote_argv[SIZEOF_ARG] = {
6182 "git", "ls-remote", ".", NULL
6183 };
6184 static bool init = FALSE;
6186 if (!init) {
6187 argv_from_env(ls_remote_argv, "TIG_LS_REMOTE");
6188 init = TRUE;
6189 }
6191 if (!*opt_git_dir)
6192 return OK;
6194 while (refs_size > 0)
6195 free(refs[--refs_size].name);
6196 while (id_refs_size > 0)
6197 free(id_refs[--id_refs_size]);
6199 return git_properties(ls_remote_argv, "\t", read_ref);
6200 }
6202 static int
6203 read_repo_config_option(char *name, size_t namelen, char *value, size_t valuelen)
6204 {
6205 if (!strcmp(name, "i18n.commitencoding"))
6206 string_ncopy(opt_encoding, value, valuelen);
6208 if (!strcmp(name, "core.editor"))
6209 string_ncopy(opt_editor, value, valuelen);
6211 /* branch.<head>.remote */
6212 if (*opt_head &&
6213 !strncmp(name, "branch.", 7) &&
6214 !strncmp(name + 7, opt_head, strlen(opt_head)) &&
6215 !strcmp(name + 7 + strlen(opt_head), ".remote"))
6216 string_ncopy(opt_remote, value, valuelen);
6218 if (*opt_head && *opt_remote &&
6219 !strncmp(name, "branch.", 7) &&
6220 !strncmp(name + 7, opt_head, strlen(opt_head)) &&
6221 !strcmp(name + 7 + strlen(opt_head), ".merge")) {
6222 size_t from = strlen(opt_remote);
6224 if (!prefixcmp(value, "refs/heads/")) {
6225 value += STRING_SIZE("refs/heads/");
6226 valuelen -= STRING_SIZE("refs/heads/");
6227 }
6229 if (!string_format_from(opt_remote, &from, "/%s", value))
6230 opt_remote[0] = 0;
6231 }
6233 return OK;
6234 }
6236 static int
6237 load_git_config(void)
6238 {
6239 const char *config_list_argv[] = { "git", GIT_CONFIG, "--list", NULL };
6241 return git_properties(config_list_argv, "=", read_repo_config_option);
6242 }
6244 static int
6245 read_repo_info(char *name, size_t namelen, char *value, size_t valuelen)
6246 {
6247 if (!opt_git_dir[0]) {
6248 string_ncopy(opt_git_dir, name, namelen);
6250 } else if (opt_is_inside_work_tree == -1) {
6251 /* This can be 3 different values depending on the
6252 * version of git being used. If git-rev-parse does not
6253 * understand --is-inside-work-tree it will simply echo
6254 * the option else either "true" or "false" is printed.
6255 * Default to true for the unknown case. */
6256 opt_is_inside_work_tree = strcmp(name, "false") ? TRUE : FALSE;
6257 } else {
6258 string_ncopy(opt_cdup, name, namelen);
6259 }
6261 return OK;
6262 }
6264 static int
6265 load_repo_info(void)
6266 {
6267 const char *head_argv[] = {
6268 "git", "symbolic-ref", "HEAD", NULL
6269 };
6270 const char *rev_parse_argv[] = {
6271 "git", "rev-parse", "--git-dir", "--is-inside-work-tree",
6272 "--show-cdup", NULL
6273 };
6275 if (run_io_buf(head_argv, opt_head, sizeof(opt_head))) {
6276 chomp_string(opt_head);
6277 if (!prefixcmp(opt_head, "refs/heads/")) {
6278 char *offset = opt_head + STRING_SIZE("refs/heads/");
6280 memmove(opt_head, offset, strlen(offset) + 1);
6281 }
6282 }
6284 return git_properties(rev_parse_argv, "=", read_repo_info);
6285 }
6287 static int
6288 read_properties(struct io *io, const char *separators,
6289 int (*read_property)(char *, size_t, char *, size_t))
6290 {
6291 char *name;
6292 int state = OK;
6294 if (!start_io(io))
6295 return ERR;
6297 while (state == OK && (name = io_get(io, '\n', TRUE))) {
6298 char *value;
6299 size_t namelen;
6300 size_t valuelen;
6302 name = chomp_string(name);
6303 namelen = strcspn(name, separators);
6305 if (name[namelen]) {
6306 name[namelen] = 0;
6307 value = chomp_string(name + namelen + 1);
6308 valuelen = strlen(value);
6310 } else {
6311 value = "";
6312 valuelen = 0;
6313 }
6315 state = read_property(name, namelen, value, valuelen);
6316 }
6318 if (state != ERR && io_error(io))
6319 state = ERR;
6320 done_io(io);
6322 return state;
6323 }
6326 /*
6327 * Main
6328 */
6330 static void __NORETURN
6331 quit(int sig)
6332 {
6333 /* XXX: Restore tty modes and let the OS cleanup the rest! */
6334 if (cursed)
6335 endwin();
6336 exit(0);
6337 }
6339 static void __NORETURN
6340 die(const char *err, ...)
6341 {
6342 va_list args;
6344 endwin();
6346 va_start(args, err);
6347 fputs("tig: ", stderr);
6348 vfprintf(stderr, err, args);
6349 fputs("\n", stderr);
6350 va_end(args);
6352 exit(1);
6353 }
6355 static void
6356 warn(const char *msg, ...)
6357 {
6358 va_list args;
6360 va_start(args, msg);
6361 fputs("tig warning: ", stderr);
6362 vfprintf(stderr, msg, args);
6363 fputs("\n", stderr);
6364 va_end(args);
6365 }
6367 int
6368 main(int argc, const char *argv[])
6369 {
6370 const char **run_argv = NULL;
6371 struct view *view;
6372 enum request request;
6373 size_t i;
6375 signal(SIGINT, quit);
6377 if (setlocale(LC_ALL, "")) {
6378 char *codeset = nl_langinfo(CODESET);
6380 string_ncopy(opt_codeset, codeset, strlen(codeset));
6381 }
6383 if (load_repo_info() == ERR)
6384 die("Failed to load repo info.");
6386 if (load_options() == ERR)
6387 die("Failed to load user config.");
6389 if (load_git_config() == ERR)
6390 die("Failed to load repo config.");
6392 request = parse_options(argc, argv, &run_argv);
6393 if (request == REQ_NONE)
6394 return 0;
6396 /* Require a git repository unless when running in pager mode. */
6397 if (!opt_git_dir[0] && request != REQ_VIEW_PAGER)
6398 die("Not a git repository");
6400 if (*opt_encoding && strcasecmp(opt_encoding, "UTF-8"))
6401 opt_utf8 = FALSE;
6403 if (*opt_codeset && strcmp(opt_codeset, opt_encoding)) {
6404 opt_iconv = iconv_open(opt_codeset, opt_encoding);
6405 if (opt_iconv == ICONV_NONE)
6406 die("Failed to initialize character set conversion");
6407 }
6409 if (load_refs() == ERR)
6410 die("Failed to load refs.");
6412 foreach_view (view, i)
6413 argv_from_env(view->ops->argv, view->cmd_env);
6415 init_display();
6417 if (request == REQ_VIEW_PAGER || run_argv) {
6418 if (request == REQ_VIEW_PAGER)
6419 io_open(&VIEW(request)->io, "");
6420 else if (!prepare_update(VIEW(request), run_argv, NULL, FORMAT_NONE))
6421 die("Failed to format arguments");
6422 open_view(NULL, request, OPEN_PREPARED);
6423 request = REQ_NONE;
6424 }
6426 while (view_driver(display[current_view], request)) {
6427 int key;
6428 int i;
6430 foreach_view (view, i)
6431 update_view(view);
6432 view = display[current_view];
6434 /* Refresh, accept single keystroke of input */
6435 key = wgetch(status_win);
6437 /* wgetch() with nodelay() enabled returns ERR when there's no
6438 * input. */
6439 if (key == ERR) {
6440 request = REQ_NONE;
6441 continue;
6442 }
6444 request = get_keybinding(view->keymap, key);
6446 /* Some low-level request handling. This keeps access to
6447 * status_win restricted. */
6448 switch (request) {
6449 case REQ_PROMPT:
6450 {
6451 char *cmd = read_prompt(":");
6453 if (cmd) {
6454 struct view *next = VIEW(REQ_VIEW_PAGER);
6455 const char *argv[SIZEOF_ARG] = { "git" };
6456 int argc = 1;
6458 /* When running random commands, initially show the
6459 * command in the title. However, it maybe later be
6460 * overwritten if a commit line is selected. */
6461 string_ncopy(next->ref, cmd, strlen(cmd));
6463 if (!argv_from_string(argv, &argc, cmd)) {
6464 report("Too many arguments");
6465 } else if (!prepare_update(next, argv, NULL, FORMAT_DASH)) {
6466 report("Failed to format command");
6467 } else {
6468 open_view(view, REQ_VIEW_PAGER, OPEN_PREPARED);
6469 }
6470 }
6472 request = REQ_NONE;
6473 break;
6474 }
6475 case REQ_SEARCH:
6476 case REQ_SEARCH_BACK:
6477 {
6478 const char *prompt = request == REQ_SEARCH ? "/" : "?";
6479 char *search = read_prompt(prompt);
6481 if (search)
6482 string_ncopy(opt_search, search, strlen(search));
6483 else
6484 request = REQ_NONE;
6485 break;
6486 }
6487 case REQ_SCREEN_RESIZE:
6488 {
6489 int height, width;
6491 getmaxyx(stdscr, height, width);
6493 /* Resize the status view and let the view driver take
6494 * care of resizing the displayed views. */
6495 wresize(status_win, 1, width);
6496 mvwin(status_win, height - 1, 0);
6497 wrefresh(status_win);
6498 break;
6499 }
6500 default:
6501 break;
6502 }
6503 }
6505 quit(0);
6507 return 0;
6508 }